[V3] Update code standards (black code format pass) (#1650)

* ran black: code formatter against `redbot/` with `-l 99`

* badge

redbot/core/commands/commands.py

@@ -20,7 +20,7 @@ class Command(commands.Command):
     """
 
     def __init__(self, *args, **kwargs):
-        self._help_override = kwargs.pop('help_override', None)
+        self._help_override = kwargs.pop("help_override", None)
         super().__init__(*args, **kwargs)
         self.translator = kwargs.pop("i18n", None)
 
@@ -40,7 +40,7 @@ class Command(commands.Command):
             translator = self.translator
         command_doc = self.callback.__doc__
         if command_doc is None:
-            return ''
+            return ""
         return inspect.cleandoc(translator(command_doc))
 
     @help.setter
@@ -60,6 +60,7 @@ class Group(Command, commands.Group):
 
 # decorators
 
+
 def command(name=None, cls=Command, **attrs):
     """A decorator which transforms an async function into a `Command`.