[3.12] GH-112152: Fix typo in typing.override docstring (GH-112158) (#112162)

GH-112152: Fix typo in `typing.override` docstring (GH-112158)
(cherry picked from commit 12c7e9d)

Co-authored-by: Qua27 <[email protected]>

Author: miss-islington

Lib/typing.py

@@ -3364,7 +3364,7 @@ def override[F: _Func](method: F, /) -> F:
     Usage::
 
         class Base:
-            def method(self) -> None: ...
+            def method(self) -> None:
                 pass
 
         class Child(Base):