Fix small typos in docstrings

discord/object.py

@@ -83,7 +83,7 @@ class Object(Hashable):
         try:
             id = int(id)
         except ValueError:
-            raise TypeError(f'id parameter must be convertable to int not {id.__class__!r}') from None
+            raise TypeError(f'id parameter must be convertible to int not {id.__class__!r}') from None
         else:
             self.id = id