Fixed type hint

Author: eunwoo1104

dico_command/command.py

@@ -8,7 +8,7 @@ class Command:
     def __init__(self,
                  func,
                  name: str,
-                 checks: typing.Optional[typing.List[typing.Callable[[Context], bool]]] = None,
+                 checks: typing.Optional[typing.List[typing.Callable[[Context], typing.Union[bool, typing.Awaitable[bool]]]]] = None,
                  aliases: typing.Optional[typing.List[str]] = None,
                  is_subcommand: bool = False):
         self.func = func

dico_command/decorator.py

@@ -3,7 +3,7 @@
 from .context import Context
 
 
-def checks(*funcs: typing.Callable[[Context], bool]):
+def checks(*funcs: typing.Callable[[Context], typing.Union[bool, typing.Awaitable[bool]]]):
     def wrap(maybe_cmd):
         if isinstance(maybe_cmd, Command):
             maybe_cmd.checks.extend(funcs)