Update google_translate.markdown (#17065)

* Update google_translate.markdown

Clarify that this doesn't actually translate; link to the tts platform docs.

* Apply suggestions from code review

Co-authored-by: Franck Nijhof <frenck@frenck.nl>

source/_integrations/google_translate.markdown

@@ -10,7 +10,7 @@ ha_platforms:
   - tts
 ---
 
-The `google_translate` text-to-speech platform uses the unofficial [Google Translate Text-to-Speech engine](https://translate.google.com/) to read a text with natural sounding voices.
+The `google_translate` text-to-speech platform uses the unofficial [Google Translate Text-to-Speech engine](https://translate.google.com/) to read a text with natural sounding voices. Contrary to what the name suggests, the integration only does text-to-speech and does not translate messages sent to it.
 
 ## Configuration
 
@@ -24,7 +24,7 @@ tts:
 
 {% configuration %}
 language:
-  description: "The language to use."
+  description: "The default speech language to use."
   required: false
   type: string
   default: "`en`"
@@ -33,6 +33,8 @@ language:
 Check the [complete list of supported languages](https://translate.google.com/intl/en_ALL/about/languages/) (languages where "Talk" feature is enabled in Google Translate) for allowed values.
 Use the 2 digit language code which you can find at the end of URL when you click on Language name.
 
+For more information about using text-to-speech with Home Assistant and more details on all the options it provides, see the [TTS documentation](/integrations/tts/).
+
 ## Full configuration example
 
 A full configuration sample including optional variables: