Update language-support.md

Author: ArcherAZ

articles/cognitive-services/Speech-Service/language-support.md

@@ -31,6 +31,9 @@ The table in this section summarizes the locales and voices supported for Speech
 
 Additional remarks for Speech-to-text locales are included in the [Custom Speech](#custom-speech) section below. 
 
+> [!TIP]
+> Try out the [Real-time Speech-to-text tool](https://speech.microsoft.com/portal/speechtotexttool) without having to use any code.
+
 [!INCLUDE [Language support include](includes/language-support/stt.md)]
 
 ### Custom Speech