[V3] Pin discord.py for beta 16 release (#1848)

* Update main requirements

* Update docs requirements

* Black reformat after version update

* Pin dpy  in docs

redbot/cogs/warnings/helpers.py

@@ -69,8 +69,9 @@ def get_command_from_input(bot, userinput: str):
     check_str = inspect.getsource(checks.is_owner)
     if any(inspect.getsource(x) in check_str for x in com.checks):
         # command the user specified has the is_owner check
-        return None, _(
-            "That command requires bot owner. I can't allow you to use that for an action"
+        return (
+            None,
+            _("That command requires bot owner. I can't allow you to use that for an action"),
         )
     return "{prefix}" + orig, None