Fix method doc signatures for multiline required parameters (#374)

* Fix method doc signatures for multiline required parameters.

Existing doc generator failed to recognize parameters as required when parameter descriptions
extended over more than one line. Besides presenting incorrect information, resulting
inconsistencies broke checks for automated sample generation.

* Regen docs
diff --git a/docs/dyn/genomics_v1.operations.html b/docs/dyn/genomics_v1.operations.html
index c0c602e..ab6ddf1 100644
--- a/docs/dyn/genomics_v1.operations.html
+++ b/docs/dyn/genomics_v1.operations.html
@@ -249,7 +249,6 @@
   An object of the form:
 
     { # The response message for Operations.ListOperations.
-    "nextPageToken": "A String", # The standard List next-page token.
     "operations": [ # A list of operations that matches the specified filter in the request.
       { # This resource represents a long-running operation that is the result of a
           # network API call.
@@ -328,6 +327,7 @@
         "name": "A String", # The server-assigned name, which is only unique within the same service that originally returns it. For example: `operations/CJHU7Oi_ChDrveSpBRjfuL-qzoWAgEw`
       },
     ],
+    "nextPageToken": "A String", # The standard List next-page token.
   }</pre>
 </div>