man: Document arguments for invite, kick, ban, unban, shrug

man/nheko.1.adoc.in

@@ -118,25 +118,25 @@ Join a room.
 */part*, */leave*::
 Leave the current room.
 
-*/invite* _<username>_::
-Invite a user into the current room.
+*/invite* _<username>_ _[reason]_::
+Invite a user into the current room. _reason_ is optional.
 
-*/kick* _<username>_::
-Kick a user from the current room.
+*/kick* _<username>_ _[reason]_::
+Kick a user from the current room. _reason_ is optional.
 
-*/ban* _<username>_::
-Ban a user from the current room.
+*/ban* _<username>_ _[reason]_::
+Ban a user from the current room. _reason_ is optional.
 
-*/unban* _<username>_::
-Unban a user.
+*/unban* _<username>_ _[reason]_::
+Unban a user. _reason_ is optional.
 
 */roomnick* _<roomname>_::
 Change your nickname in a single room.
 
 === Emoticons
 
-*/shrug*::
-Inserts `¯\_(ツ)_/¯`
+*/shrug* _[message]_::
+Inserts `¯\_(ツ)_/¯` followed by an optional _message_.
 
 */fliptable*::
 Inserts `(╯°□°)╯︵ ┻━┻`