Show decorator usage instead of signature in docs

docs/api.rst

@@ -40,7 +40,10 @@ Client
 
 .. autoclass:: Client
     :members:
-    :exclude-members: fetch_guilds
+    :exclude-members: fetch_guilds, event
+
+    .. automethod:: Client.event()
+        :decorator:
 
     .. automethod:: Client.fetch_guilds
         :async-for:

docs/ext/commands/api.rst

@@ -18,6 +18,31 @@ Bot
 .. autoclass:: discord.ext.commands.Bot
     :members:
     :inherited-members:
+    :exclude-members: after_invoke, before_invoke, check, check_once, command, event, group, listen
+
+    .. automethod:: Bot.after_invoke()
+        :decorator:
+
+    .. automethod:: Bot.before_invoke()
+        :decorator:
+
+    .. automethod:: Bot.check()
+        :decorator:
+
+    .. automethod:: Bot.check_once()
+        :decorator:
+
+    .. automethod:: Bot.command(*args, **kwargs)
+        :decorator:
+    
+    .. automethod:: Bot.event()
+        :decorator:
+
+    .. automethod:: Bot.group(*args, **kwargs)
+        :decorator:
+
+    .. automethod:: Bot.listen(name=None)
+        :decorator:
 
 AutoShardedBot
 ~~~~~~~~~~~~~~~~
@@ -84,8 +109,10 @@ Decorators
 ~~~~~~~~~~~~
 
 .. autofunction:: discord.ext.commands.command
+    :decorator:
 
 .. autofunction:: discord.ext.commands.group
+    :decorator:
 
 Command
 ~~~~~~~~~
@@ -95,6 +122,16 @@ Command
 .. autoclass:: discord.ext.commands.Command
     :members:
     :special-members: __call__
+    :exclude-members: after_invoke, before_invoke, error
+
+    .. automethod:: Command.after_invoke()
+        :decorator:
+
+    .. automethod:: Command.before_invoke()
+        :decorator:
+
+    .. automethod:: Command.error()
+        :decorator:
 
 Group
 ~~~~~~
@@ -104,6 +141,22 @@ Group
 .. autoclass:: discord.ext.commands.Group
     :members:
     :inherited-members:
+    :exclude-members: after_invoke, before_invoke, command, error, group
+
+    .. automethod:: Group.after_invoke()
+        :decorator:
+
+    .. automethod:: Group.before_invoke()
+        :decorator:
+
+    .. automethod:: Group.command(*args, **kwargs)
+        :decorator:
+
+    .. automethod:: Group.error()
+        :decorator:
+
+    .. automethod:: Group.group(*args, **kwargs)
+        :decorator:
 
 GroupMixin
 ~~~~~~~~~~~
@@ -112,6 +165,13 @@ GroupMixin
 
 .. autoclass:: discord.ext.commands.GroupMixin
     :members:
+    :exclude-members: command, group
+
+    .. automethod:: GroupMixin.command(*args, **kwargs)
+        :decorator:
+
+    .. automethod:: GroupMixin.group(*args, **kwargs)
+        :decorator:
 
 .. _ext_commands_api_cogs:
 
@@ -211,41 +271,59 @@ Enums
 Checks
 -------
 
-.. autofunction:: discord.ext.commands.check
+.. autofunction:: discord.ext.commands.check(predicate)
+    :decorator:
 
-.. autofunction:: discord.ext.commands.check_any
+.. autofunction:: discord.ext.commands.check_any(*checks)
+    :decorator:
 
-.. autofunction:: discord.ext.commands.has_role
+.. autofunction:: discord.ext.commands.has_role(item)
+    :decorator:
 
-.. autofunction:: discord.ext.commands.has_permissions
+.. autofunction:: discord.ext.commands.has_permissions(**perms)
+    :decorator:
 
-.. autofunction:: discord.ext.commands.has_guild_permissions
+.. autofunction:: discord.ext.commands.has_guild_permissions(**perms)
+    :decorator:
 
-.. autofunction:: discord.ext.commands.has_any_role
+.. autofunction:: discord.ext.commands.has_any_role(*items)
+    :decorator:
 
-.. autofunction:: discord.ext.commands.bot_has_role
+.. autofunction:: discord.ext.commands.bot_has_role(item)
+    :decorator:
 
-.. autofunction:: discord.ext.commands.bot_has_permissions
+.. autofunction:: discord.ext.commands.bot_has_permissions(**perms)
+    :decorator:
 
-.. autofunction:: discord.ext.commands.bot_has_guild_permissions
+.. autofunction:: discord.ext.commands.bot_has_guild_permissions(**perms)
+    :decorator:
 
-.. autofunction:: discord.ext.commands.bot_has_any_role
+.. autofunction:: discord.ext.commands.bot_has_any_role(*items)
+    :decorator:
 
-.. autofunction:: discord.ext.commands.cooldown
+.. autofunction:: discord.ext.commands.cooldown(rate, per, type=discord.ext.commands.BucketType.default)
+    :decorator:
 
-.. autofunction:: discord.ext.commands.max_concurrency
+.. autofunction:: discord.ext.commands.max_concurrency(number, per=discord.ext.commands.BucketType.default, *, wait=False)
+    :decorator:
 
-.. autofunction:: discord.ext.commands.before_invoke
+.. autofunction:: discord.ext.commands.before_invoke(coro)
+    :decorator:
 
-.. autofunction:: discord.ext.commands.after_invoke
+.. autofunction:: discord.ext.commands.after_invoke(coro)
+    :decorator:
 
-.. autofunction:: discord.ext.commands.guild_only
+.. autofunction:: discord.ext.commands.guild_only(,)
+    :decorator:
 
-.. autofunction:: discord.ext.commands.dm_only
+.. autofunction:: discord.ext.commands.dm_only(,)
+    :decorator:
 
-.. autofunction:: discord.ext.commands.is_owner
+.. autofunction:: discord.ext.commands.is_owner(,)
+    :decorator:
 
-.. autofunction:: discord.ext.commands.is_nsfw
+.. autofunction:: discord.ext.commands.is_nsfw(,)
+    :decorator:
 
 .. _ext_commands_api_context:
 

docs/ext/tasks/index.rst

@@ -140,5 +140,15 @@ API Reference
 .. autoclass:: discord.ext.tasks.Loop()
     :members:
     :special-members: __call__
+    :exclude-members: after_loop, before_loop, error
+
+    .. automethod:: Loop.after_loop()
+        :decorator:
+
+    .. automethod:: Loop.before_loop()
+        :decorator:
+
+    .. automethod:: Loop.error()
+        :decorator:
 
 .. autofunction:: discord.ext.tasks.loop