gh-98561: Fix a typo in typing (GH-98562)

Ombucha · web-flow · commit b6d5d5b60afc · 2022-10-23T22:05:08.000+08:00
diff --git a/Doc/library/typing.rst b/Doc/library/typing.rst
@@ -319,7 +319,7 @@ single type parameter ``T`` . This also makes ``T`` valid as a type within the
 class body.
 
 The :class:`Generic` base class defines :meth:`~object.__class_getitem__` so
-that ``LoggedVar[t]`` is valid as a type::
+that ``LoggedVar[T]`` is valid as a type::
 
    from collections.abc import Iterable
 
