docs: fix docstring formatting

Google APIs · copybara-github · commit 4be99b038bde · 2021-11-12T17:31:06.000-08:00
Committer: @parthea PiperOrigin-RevId: 409547475
diff --git a/google/cloud/texttospeech/v1/cloud_tts.proto b/google/cloud/texttospeech/v1/cloud_tts.proto
@@ -59,11 +59,11 @@ message ListVoicesRequest {
   // Optional. Recommended.
   // [BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt) language tag. If
   // specified, the ListVoices call will only return voices that can be used to
-  // synthesize this language_code. E.g. when specifying "en-NZ", you will get
-  // supported "en-\*" voices; when specifying "no", you will get supported
-  // "no-\*" (Norwegian) and "nb-\*" (Norwegian Bokmal) voices; specifying "zh"
-  // will also get supported "cmn-\*" voices; specifying "zh-hk" will also get
-  // supported "yue-\*" voices.
+  // synthesize this language_code. E.g. when specifying `"en-NZ"`, you will get
+  // supported `"en-\*"` voices; when specifying `"no"`, you will get supported
+  // `"no-\*"` (Norwegian) and `"nb-\*"` (Norwegian Bokmal) voices; specifying
+  // `"zh"` will also get supported `"cmn-\*"` voices; specifying `"zh-hk"` will
+  // also get supported `"yue-\*"` voices.
   string language_code = 1 [(google.api.field_behavior) = OPTIONAL];
 }
 
