Merge pull request #263258 from alexeyo26/alexeyo/batch-aac

[Azure AI Svcs] Speech. Added AAC as supported codec for batch transcription

Author: prmerger-automator[bot]

articles/ai-services/speech-service/batch-transcription-audio-data.md

@@ -33,6 +33,7 @@ The batch transcription API supports a number of different formats and codecs, s
 - OPUS/OGG
 - FLAC
 - WMA
+- AAC
 - ALAW in WAV container
 - MULAW in WAV container
 - AMR