docs: update jsdoc comments (#614)

- Minor comment updates.

PiperOrigin-RevId: 312123588

Source-Author: Google APIs <noreply@google.com>
Source-Date: Mon May 18 11:49:18 2020 -0700
Source-Repo: googleapis/googleapis
Source-Sha: cd3ce2651c3921670217e664303976cdf76e9fe2
Source-Link: googleapis/googleapis@cd3ce26

Co-authored-by: Benjamin E. Coe <bencoe@google.com>
Co-authored-by: Justin Beckwith <justin.beckwith@gmail.com>

packages/google-cloud-dialogflow/protos/google/cloud/dialogflow/v2/environment.proto

@@ -54,7 +54,7 @@ message Environment {
     pattern: "projects/{project}/agent/environments/{environment}"
   };
 
-  // Represents an environment state. When a environment is pointed to a new
+  // Represents an environment state. When an environment is pointed to a new
   // agent version, the environment is temporarily set to the `LOADING` state.
   // During that time, the environment keeps on serving the previous version of
   // the agent. After the new agent version is done loading, the environment is

packages/google-cloud-dialogflow/protos/google/cloud/dialogflow/v2/intent.proto

@@ -244,6 +244,7 @@ message Intent {
     string display_name = 2;
 
     // Optional. The definition of the parameter value. It can be:
+    //
     // - a constant string,
     // - a parameter value defined as `$parameter_name`,
     // - an original parameter value defined as `$parameter_name.original`,

packages/google-cloud-dialogflow/protos/google/cloud/dialogflow/v2/session.proto

@@ -145,6 +145,10 @@ message DetectIntentResponse {
   // multiple default text responses exist, they will be concatenated when
   // generating audio. If no default platform text responses exist, the
   // generated audio content will be empty.
+  //
+  // In some scenarios, multiple output audio fields may be present in the
+  // response structure. In these cases, only the top-most-level audio output
+  // has content.
   bytes output_audio = 4;
 
   // The config used by the speech synthesizer to generate the output audio.
@@ -439,6 +443,10 @@ message StreamingDetectIntentResponse {
   // multiple default text responses exist, they will be concatenated when
   // generating audio. If no default platform text responses exist, the
   // generated audio content will be empty.
+  //
+  // In some scenarios, multiple output audio fields may be present in the
+  // response structure. In these cases, only the top-most-level audio output
+  // has content.
   bytes output_audio = 5;
 
   // The config used by the speech synthesizer to generate the output audio.

packages/google-cloud-dialogflow/synth.metadata

@@ -4,15 +4,15 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/nodejs-dialogflow.git",
-        "sha": "8130d73423435c224b5f5f93068f098c3f26cc11"
+        "sha": "4caa392e21a94493163cf5fcc0ca10447532aa75"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "a3a0bf0f6291d69f2ff3df7fcd63d28ee20ac727",
-        "internalRef": "310060413"
+        "sha": "cd3ce2651c3921670217e664303976cdf76e9fe2",
+        "internalRef": "312123588"
       }
     },
     {