fix(speech): re-add unused speaker_tag; update spacing in docs templates (via synth) (#9765)

Author: yoshi-automation

speech/docs/_static/custom.css

@@ -1,4 +1,4 @@
 div#python2-eol {
 	border-color: red;
 	border-width: medium;
-}
+} 

speech/docs/_templates/layout.html

@@ -1,3 +1,4 @@
+
 {% extends "!layout.html" %}
 {%- block content %}
 {%- if theme_fixed_sidebar|lower == 'true' %}

speech/google/cloud/speech_v1/proto/cloud_speech.proto

@@ -366,6 +366,10 @@ message SpeakerDiarizationConfig {
   // flexibility by allowing the system to automatically determine the correct
   // number of speakers. If not set, the default value is 6.
   int32 max_speaker_count = 3;
+
+  // Unused.
+  int32 speaker_tag = 5
+      [(google.api.field_behavior) = OUTPUT_ONLY, deprecated = true];
 }
 
 // Description of audio data to be recognized.