docs: docs update (#911)

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Fixes #<issue_number_goes_here> 🦕
diff --git a/docs/dyn/texttospeech_v1.text.html b/docs/dyn/texttospeech_v1.text.html
index e1c86fd..28c1a57 100644
--- a/docs/dyn/texttospeech_v1.text.html
+++ b/docs/dyn/texttospeech_v1.text.html
@@ -88,68 +88,68 @@
     The object takes the form of:
 
 { # The top-level message sent by the client for the `SynthesizeSpeech` method.
-    "input": { # Contains text input to be synthesized. Either `text` or `ssml` must be # Required. The Synthesizer requires either plain text or SSML as input.
+    &quot;input&quot;: { # Contains text input to be synthesized. Either `text` or `ssml` must be # Required. The Synthesizer requires either plain text or SSML as input.
         # supplied. Supplying both or neither returns
         # google.rpc.Code.INVALID_ARGUMENT. The input size is limited to 5000
         # characters.
-      "ssml": "A String", # The SSML document to be synthesized. The SSML document must be valid
+      &quot;text&quot;: &quot;A String&quot;, # The raw text to be synthesized.
+      &quot;ssml&quot;: &quot;A String&quot;, # The SSML document to be synthesized. The SSML document must be valid
           # and well-formed. Otherwise the RPC will fail and return
           # google.rpc.Code.INVALID_ARGUMENT. For more information, see
           # [SSML](/speech/text-to-speech/docs/ssml).
-      "text": "A String", # The raw text to be synthesized.
     },
-    "voice": { # Description of which voice to use for a synthesis request. # Required. The desired voice of the synthesized audio.
-      "ssmlGender": "A String", # The preferred gender of the voice. If not set, the service will
-          # choose a voice based on the other parameters such as language_code and
-          # name. Note that this is only a preference, not requirement; if a
-          # voice of the appropriate gender is not available, the synthesizer should
-          # substitute a voice with a different gender rather than failing the request.
-      "languageCode": "A String", # Required. The language (and potentially also the region) of the voice expressed as a
+    &quot;voice&quot;: { # Description of which voice to use for a synthesis request. # Required. The desired voice of the synthesized audio.
+      &quot;languageCode&quot;: &quot;A String&quot;, # Required. The language (and potentially also the region) of the voice expressed as a
           # [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt) language tag, e.g.
-          # "en-US". This should not include a script tag (e.g. use
-          # "cmn-cn" rather than "cmn-Hant-cn"), because the script will be inferred
+          # &quot;en-US&quot;. This should not include a script tag (e.g. use
+          # &quot;cmn-cn&quot; rather than &quot;cmn-Hant-cn&quot;), because the script will be inferred
           # from the input provided in the SynthesisInput.  The TTS service
           # will use this parameter to help choose an appropriate voice.  Note that
           # the TTS service may choose a voice with a slightly different language code
           # than the one selected; it may substitute a different region
-          # (e.g. using en-US rather than en-CA if there isn't a Canadian voice
-          # available), or even a different language, e.g. using "nb" (Norwegian
-          # Bokmal) instead of "no" (Norwegian)".
-      "name": "A String", # The name of the voice. If not set, the service will choose a
+          # (e.g. using en-US rather than en-CA if there isn&#x27;t a Canadian voice
+          # available), or even a different language, e.g. using &quot;nb&quot; (Norwegian
+          # Bokmal) instead of &quot;no&quot; (Norwegian)&quot;.
+      &quot;name&quot;: &quot;A String&quot;, # The name of the voice. If not set, the service will choose a
           # voice based on the other parameters such as language_code and gender.
+      &quot;ssmlGender&quot;: &quot;A String&quot;, # The preferred gender of the voice. If not set, the service will
+          # choose a voice based on the other parameters such as language_code and
+          # name. Note that this is only a preference, not requirement; if a
+          # voice of the appropriate gender is not available, the synthesizer should
+          # substitute a voice with a different gender rather than failing the request.
     },
-    "audioConfig": { # Description of audio data to be synthesized. # Required. The configuration of the synthesized audio.
-      "audioEncoding": "A String", # Required. The format of the audio byte stream.
-      "effectsProfileId": [ # Optional. Input only. An identifier which selects 'audio effects' profiles
+    &quot;audioConfig&quot;: { # Description of audio data to be synthesized. # Required. The configuration of the synthesized audio.
+      &quot;effectsProfileId&quot;: [ # Optional. Input only. An identifier which selects &#x27;audio effects&#x27; profiles
           # that are applied on (post synthesized) text to speech. Effects are applied
           # on top of each other in the order they are given. See
           # [audio
           # profiles](https://cloud.google.com/text-to-speech/docs/audio-profiles) for
           # current supported profile ids.
-        "A String",
+        &quot;A String&quot;,
       ],
-      "sampleRateHertz": 42, # Optional. The synthesis sample rate (in hertz) for this audio. When this is
-          # specified in SynthesizeSpeechRequest, if this is different from the voice's
-          # natural sample rate, then the synthesizer will honor this request by
-          # converting to the desired sample rate (which might result in worse audio
-          # quality), unless the specified sample rate is not supported for the
-          # encoding chosen, in which case it will fail the request and return
-          # google.rpc.Code.INVALID_ARGUMENT.
-      "pitch": 3.14, # Optional. Input only. Speaking pitch, in the range [-20.0, 20.0]. 20 means
-          # increase 20 semitones from the original pitch. -20 means decrease 20
-          # semitones from the original pitch.
-      "speakingRate": 3.14, # Optional. Input only. Speaking rate/speed, in the range [0.25, 4.0]. 1.0 is
-          # the normal native speed supported by the specific voice. 2.0 is twice as
-          # fast, and 0.5 is half as fast. If unset(0.0), defaults to the native 1.0
-          # speed. Any other values &lt; 0.25 or &gt; 4.0 will return an error.
-      "volumeGainDb": 3.14, # Optional. Input only. Volume gain (in dB) of the normal native volume
+      &quot;volumeGainDb&quot;: 3.14, # Optional. Input only. Volume gain (in dB) of the normal native volume
           # supported by the specific voice, in the range [-96.0, 16.0]. If unset, or
           # set to a value of 0.0 (dB), will play at normal native signal amplitude. A
           # value of -6.0 (dB) will play at approximately half the amplitude of the
           # normal native signal amplitude. A value of +6.0 (dB) will play at
           # approximately twice the amplitude of the normal native signal amplitude.
-          # Strongly recommend not to exceed +10 (dB) as there's usually no effective
+          # Strongly recommend not to exceed +10 (dB) as there&#x27;s usually no effective
           # increase in loudness for any value greater than that.
+      &quot;sampleRateHertz&quot;: 42, # Optional. The synthesis sample rate (in hertz) for this audio. When this is
+          # specified in SynthesizeSpeechRequest, if this is different from the voice&#x27;s
+          # natural sample rate, then the synthesizer will honor this request by
+          # converting to the desired sample rate (which might result in worse audio
+          # quality), unless the specified sample rate is not supported for the
+          # encoding chosen, in which case it will fail the request and return
+          # google.rpc.Code.INVALID_ARGUMENT.
+      &quot;pitch&quot;: 3.14, # Optional. Input only. Speaking pitch, in the range [-20.0, 20.0]. 20 means
+          # increase 20 semitones from the original pitch. -20 means decrease 20
+          # semitones from the original pitch.
+      &quot;speakingRate&quot;: 3.14, # Optional. Input only. Speaking rate/speed, in the range [0.25, 4.0]. 1.0 is
+          # the normal native speed supported by the specific voice. 2.0 is twice as
+          # fast, and 0.5 is half as fast. If unset(0.0), defaults to the native 1.0
+          # speed. Any other values &lt; 0.25 or &gt; 4.0 will return an error.
+      &quot;audioEncoding&quot;: &quot;A String&quot;, # Required. The format of the audio byte stream.
     },
   }
 
@@ -162,7 +162,7 @@
   An object of the form:
 
     { # The message returned to the client by the `SynthesizeSpeech` method.
-    "audioContent": "A String", # The audio data bytes encoded as specified in the request, including the
+    &quot;audioContent&quot;: &quot;A String&quot;, # The audio data bytes encoded as specified in the request, including the
         # header for encodings that are wrapped in containers (e.g. MP3, OGG_OPUS).
         # For LINEAR16 audio, we include the WAV header. Note: as
         # with all bytes fields, protobuffers use a pure binary representation,