[commands] Missing an extra ] in the documented return type.
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		| @@ -598,7 +598,7 @@ class HelpCommand: | ||||
|  | ||||
|         Parameters | ||||
|         ------------ | ||||
|         mapping: Mapping[Optional[:class:`Cog`], List[:class:`Command`] | ||||
|         mapping: Mapping[Optional[:class:`Cog`], List[:class:`Command`]] | ||||
|             A mapping of cogs to commands that have been requested by the user for help. | ||||
|             The key of the mapping is the :class:`~.commands.Cog` that the command belongs to, or | ||||
|             ``None`` if there isn't one, and the value is a list of commands that belongs to that cog. | ||||
|   | ||||
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