Update batch-transcription.md

Fixing typo

Author: Pro777

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

@@ -36,7 +36,7 @@ To use the batch transcription REST API:
 1. [Get batch transcription results](batch-transcription-get.md) - Check transcription status and retrieve transcription results asynchronously. 
 
 > [!IMPORTANT]
-> Batch transcription jobs are scheduled on a best-effort basis. At pick hours it may take up to 30 minutes or longer for a transcription job to start processing. See how to check the current status of a batch transcription job in [this section](batch-transcription-get.md#get-transcription-status).
+> Batch transcription jobs are scheduled on a best-effort basis. At peak hours it may take up to 30 minutes or longer for a transcription job to start processing. See how to check the current status of a batch transcription job in [this section](batch-transcription-get.md#get-transcription-status).
 
 ## Next steps