[Chapel Merge] Update docs version button to reflect staged docum

Branch: refs/heads/master
Revision: d198c61
Author: bradcray
Log Message:

Merge pull request #17394 from bradcray/update-docs-version-button

Update docs version button to reflect staged documents

[rote during the release, not reviewed]

This updates the docs button for the website to reflect the fact that the staged docs are for 1.24, the master/main branch is now 1.25.

Modified Files:
M doc/rst/conf.py

M doc/util/versionButton.php

Compare: https://github.com/chapel-lang/chapel/compare/a8a9dd063cce...d198c611ed71