Update docs/collections/_diagrams/sequence-mesh-download.md

Co-authored-by: lapenna-bjss <160487283+lapenna-bjss@users.noreply.github.com>

Author: tdroza-nhs

docs/collections/_diagrams/sequence-mesh-download.md

@@ -23,7 +23,7 @@ sequenceDiagram
     deactivate meshMailbox
     meshDownload ->> s3: Upload file
     activate s3
-      s3 -->> meshDownload: S3Uri
+      s3 -->> meshDownload: messageUri
     deactivate s3
     meshDownload -) eventBus: MESHInboxMessageDownloaded(senderId, messageReference, messageUri) Event
     meshDownload -) meshMailbox: Ack