build: run docs regen in synth.py (#1059)

diff --git a/docs/dyn/cloudiot_v1.projects.locations.registries.devices.states.html b/docs/dyn/cloudiot_v1.projects.locations.registries.devices.states.html
index 93a37c2..1b61205 100644
--- a/docs/dyn/cloudiot_v1.projects.locations.registries.devices.states.html
+++ b/docs/dyn/cloudiot_v1.projects.locations.registries.devices.states.html
@@ -104,8 +104,8 @@
     { # Response for `ListDeviceStates`.
     "deviceStates": [ # The last few device states. States are listed in descending order of server update time, starting from the most recent one.
       { # The device state, as reported by the device.
-        "binaryData": "A String", # The device state data.
         "updateTime": "A String", # [Output only] The time at which this state version was updated in Cloud IoT Core.
+        "binaryData": "A String", # The device state data.
       },
     ],
   }</pre>