Update articles/cognitive-services/Speech-Service/conversation-transcription.md

Co-authored-by: Eric Urban <[email protected]>

Author: jimxiei

articles/cognitive-services/Speech-Service/conversation-transcription.md

@@ -59,7 +59,7 @@ Conversation transcription uses two types of inputs:
 - **User voice samples:** Conversation transcription needs user profiles in advance of the conversation for speaker identification. Collect audio recordings from each user, and then send the recordings to the [signature generation service](https://aka.ms/cts/signaturegenservice) to validate the audio and generate user profiles.
 
 > [!NOTE]
-> Single channel audio configuration for Conversation is currently under private preview, please contact [email protected] for more details.
+> Single channel audio configuration for conversation transcription is currently only available in private preview.
 
 User voice samples for voice signatures are required for speaker identification. Speakers who don't have voice samples are recognized as *unidentified*. Unidentified speakers can still be differentiated when the `DifferentiateGuestSpeakers` property is enabled (see the following example). The transcription output then shows speakers as, for example, *Guest_0* and *Guest_1*, instead of recognizing them as pre-enrolled specific speaker names.