fix english file

lang/en_US.json

@@ -689,6 +689,6 @@
   "slowmode_log": "{user} (``{user_id}``) set the slowmode interval to {duration} seconds in {channel} (``{channel_id}``)",
   "slowmode_set": "Slowmode is now set to {duration} in {channel}",
   "slowmode_help": "Control the slowmode on a channel",
-  "mute_punishment_failure":"Failed to mute {user} (``{user_id}``) for {duration} for ``{reason}`` (``#{inf}``) due to missing permissions!"
+  "mute_punishment_failure":"Failed to mute {user} (``{user_id}``) for {duration} for ``{reason}`` (``#{inf}``) due to missing permissions!",
   "kick_punishment_failure":"Failed to kick {user} (``{user_id}``) for ``{reason}`` (``#{inf}``) due to missing permissions!"
 }