[Chapel Merge] Update version button for 1.27.0 release

Branch: refs/heads/main
Revision: 5b5817e
Author: bradcray
Link: Update version button for 1.27.0 release by bradcray · Pull Request #20121 · chapel-lang/chapel · GitHub
Log Message:

Merge pull request #20121 from bradcray/docs-version-button-1.27

Update version button for 1.27.0 release

[trivial/rote, not reviewed]

This updates the Chapel documentation version button/menu to
reflect today's 1.27.0 release

Modified Files:
M doc/util/versionButton.php

Compare: https://github.com/chapel-lang/chapel/compare/985baa137db6...5b5817edf2d0