[3.13] For enum.bin, update versionadded directive from 3.10 to 3.11 (GH-144574) (#144589)

For `enum.bin`, update versionadded directive from 3.10 to 3.11 (GH-144574)
(cherry picked from commit d736349)

Co-authored-by: Guo Ci <zguoci@gmail.com>

Author: miss-islington

Doc/library/enum.rst

@@ -1052,7 +1052,7 @@ Utilities and Decorators
       >>> enum.bin(~10)   # ~10 is -11
       '0b1 0101'
 
-   .. versionadded:: 3.10
+   .. versionadded:: 3.11
 
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