Help/OBJC_STANDARD: Document Objective C17 and C23 support

This was missed in

* commit 93b7d3d292 (C17 support, 2021-02-06, v3.21.0-rc1~587^2~10)
* commit dcd599757f (C23 support, 2021-02-06, v3.21.0-rc1~587^2~9)

Fixes: #25746
This commit is contained in:
Raul Tambre 2024-04-15 18:18:21 +03:00 committed by Brad King
parent d3190d6a73
commit 84f1eb64f3

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@ -20,6 +20,16 @@ Supported values are:
``11``
Objective C11
``17``
.. versionadded:: 3.21
Objective C17
``23``
.. versionadded:: 3.21
Objective C23
If the value requested does not result in a compile flag being added for
the compiler in use, a previous standard flag will be added instead. This
means that using: