Fix doc

src/service/pdu.rs

@@ -97,7 +97,7 @@ impl PduEvent {
         Ok(())
     }
 
-    /// Copies the `redacts` property of the event to the `content` dict
+    /// Copies the `redacts` property of the event to the `content` dict and vice-versa.
     ///
     /// This follows the specification's
     /// [recommendation](https://spec.matrix.org/v1.10/rooms/v11/#moving-the-redacts-property-of-mroomredaction-events-to-a-content-property):
@@ -105,6 +105,10 @@ impl PduEvent {
     /// > For backwards-compatibility with older clients, servers should add a redacts
     /// > property to the top level of m.room.redaction events in when serving such events
     /// > over the Client-Server API.
+    /// >
+    /// > For improved compatibility with newer clients, servers should add a redacts property
+    /// > to the content of m.room.redaction events in older room versions when serving
+    /// > such events over the Client-Server API.
     pub fn copy_redacts(&self) -> (Option<Arc<EventId>>, Box<RawJsonValue>) {
         if self.kind == TimelineEventType::RoomRedaction {
             if let Ok(mut content) =