clarify docs

docusaurus/video/docusaurus/docs/api/transcription/transcribing_calls.mdx

@@ -55,6 +55,8 @@ curl -X POST "https://video.stream-io-api.com/api/v2/video/call/default/${CALL_I
 
 By default the transcriptions are stored on Stream’s S3 bucket and retained for 2-weeks. You can also configure your application to have transcriptions stored on your own external storage, see the storage section of tis document for more detail.
 
+> **Note:** While transcription occurs continuously during the call, and chunks of conversations are continuously saved, the complete transcription file is only uploaded once at the end of the call. This approach is used to avoid requiring additional permissions (such as delete permissions) when using external storage.
+
 </TabItem>
 </Tabs>
 
@@ -90,7 +92,7 @@ curl "https://video.stream-io-api.com/api/v2/video/call/default/${CALL_ID}/trans
 
 ## Delete call transcription
 
-This endpoint allows to delete call transcription.  
+This endpoint allows to delete call transcription.
 Please note that transcriptions will be deleted only if they are stored on Stream side (default).
 
 An error will be returned if the transcription doesn't exist.