GH-95172 Make the same version versionadded oneline (GH-95172)

* Make the same version versionadded oneline

* Format versionadded for enum.rst

* Format versionadded

A single line versionadded was reading better.

Co-authored-by: Senthil Kumaran <[email protected]>
(cherry picked from commit d6062d1)

Co-authored-by: 180909 <[email protected]>

Author: miss-islington

Doc/library/enum.rst

@@ -134,8 +134,7 @@ Module Contents
 
 
 .. versionadded:: 3.6  ``Flag``, ``IntFlag``, ``auto``
-.. versionadded:: 3.11  ``StrEnum``, ``EnumCheck``, ``FlagBoundary``, ``property``
-.. versionadded:: 3.11  ``member``, ``nonmember``
+.. versionadded:: 3.11  ``StrEnum``, ``EnumCheck``, ``FlagBoundary``, ``property``, ``member``, ``nonmember``
 
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