Rename Chat-Group-Timestamps into Chat-Group-Member-Timestamps

Author: link2xt

Diff for: src/headerdef.rs

@@ -70,7 +70,7 @@ pub enum HeaderDef {
 
     /// Space-separated timestamps of member addition (for current members)
     /// or removal (for past members).
-    ChatGroupTimestamps,
+    ChatGroupMemberTimestamps,
 
     /// Duration of the attached media file.
     ChatDuration,