Fix "Copy install command" button on old releases page#1109

heckj merged 1 commit intoswiftlang:mainswiftlang/swift-org-website:mainfrom

chromy:chromy/2024-07-09-fix-old-download-linkchromy/swift-org-website:chromy/2024-07-09-fix-old-download-linkCopy head branch name to clipboard