fix(feedback): fix typo in UR envelope item (#12412)

Author: aliu39

develop-docs/sdk/data-model/envelope-items.mdx

@@ -260,8 +260,7 @@ Envelope.
 
 ### User Report - Deprecated
 
-Item type `"user_report"`. This is an older way of submitting user feedback we
-are have now deprecated. It continues to work so older SDKs won't break. But new implementation should follow the `feedback` item type described above.
+Item type `"user_report"`. This is an older, deprecated way of submitting user feedback. It continues to work so older SDKs won't break. New implementations should follow the `feedback` item type described above.
 
 This item works by associating user information and comments with an event. If both the item and its associated event are accepted, we convert it to a user feedback.