Change recording to event for replay recording constraints (#11744)

Author: romtsn

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

@@ -272,7 +272,7 @@ details.
 **Constraints:**
 
 - This Item may occur at most once per Envelope.
-- This Item must be sent with a Replay Recording Item.
+- This Item must be sent with a Replay Event Item.
 
 **Envelope Headers:**