Fix typo in `fetch_message` docstring
@@ -1036,10 +1036,10 @@ class RESTClient(traits.NetworkSettingsAware, abc.ABC):
----------
channel : hikari.snowflakes.SnowflakeishOr[hikari.channels.TextableChannel]
The channel to fetch messages in. This may be the object or
- the ID of an existing message.
+ the ID of an existing channel.
message : hikari.snowflakes.SnowflakeishOr[hikari.messages.PartialMessage]
The message to fetch. This may be the object or the ID of an
- existing channel.
+ existing message.
Returns
-------
