[CogSvcs] Added various display names, as hints to TOC search

Author: IEvangelist

articles/cognitive-services/Speech-Service/toc.yml

@@ -7,7 +7,7 @@
     href: overview.md
   - name: Language and region support
     href: language-support.md
-    displayName: "languages,locales,region,voice,gender,language code,locale,locale code"
+    displayName: "languages,locales,region,voice,gender,language code,locale,locale code,neural voice,standard voice"
 - name: Speech-to-text
   expanded: false
   items:
@@ -102,6 +102,7 @@
       href: speech-synthesis-markup.md
     - name: Improve output with Custom Voices
       href: how-to-custom-voice.md
+      displayName: "custom voice"
     - name: Synthesize speech with Long Audio API
       href: long-audio-api.md
     - name: Use speech synthesis with Docker containers
@@ -363,6 +364,7 @@
       items:
       - name: Get started with Custom Voice
         href: how-to-custom-voice.md
+        displayName: "custom voice, neural voice"
       - name: Prepare data
         href: how-to-custom-voice-prepare-data.md
       - name: Create and use Custom Voice models