Change jump_to_url to jump_url and fix format.

People kept asking, might as well.

discord/message.py

@@ -434,10 +434,10 @@ class Message:
         return self._edited_timestamp
 
     @property
-    def jump_to_url(self):
+    def jump_url(self):
         """:class:`str`: Returns a URL that allows the client to jump to this message."""
         guild_id = getattr(self.guild, 'id', '@me')
-        return 'https://discordapp.com/channels/{0}/{1.channel.id}?jump={1.id}'.format(guild_id, self)
+        return 'https://discordapp.com/channels/{0}/{1.channel.id}/{1.id}'.format(guild_id, self)
 
     @utils.cached_slot_property('_cs_system_content')
     def system_content(self):