Doc: Minor fixes (GH-23422)

Fidget-Spinner · web-flow · commit 8d17d2bd0a73 · 2020-11-25T13:59:59.000+09:00
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
@@ -5065,7 +5065,7 @@ instantiated from the type::
 
       >>> class M(type):
       ...     def __or__(self, other):
-      ...     return "Hello"
+      ...         return "Hello"
       ...
       >>> class C(metaclass=M):
       ...     pass
diff --git a/Doc/whatsnew/3.10.rst b/Doc/whatsnew/3.10.rst
@@ -120,8 +120,8 @@ See :pep:`613` for more details.
 
 (Contributed by Mikhail Golubev in :issue:`41923`.)
 
-PEP604: New Type Union Operator
--------------------------------
+PEP 604: New Type Union Operator
+--------------------------------
 
 A new type union operator was introduced which enables the syntax ``X | Y``.
 This provides a cleaner way of expressing 'either type X or type Y' instead of
