Add documentation examples for AsyncIterator and change_presence.

discord/abc.py

@@ -335,7 +335,6 @@ class GuildChannel:
         - Guild roles
         - Channel overrides
         - Member overrides
-        - Whether the channel is the default channel.
 
         Parameters
         ----------
@@ -764,7 +763,7 @@ class Messageable(metaclass=abc.ABCMeta):
 
         Example Usage: ::
 
-            with channel.typing():
+            async with channel.typing():
                 # do expensive stuff here
                 await channel.send('done!')
 

discord/client.py

@@ -753,6 +753,11 @@ class Client:
         The game parameter is a Game object (not a string) that represents
         a game being played currently.
 
+        Example: ::
+
+            game = discord.Game(name="with the API")
+            await client.change_presence(status=discord.Status.idle, game=game)
+
         Parameters
         ----------
         game: Optional[:class:`Game`]