[docsy] Add external link checking, fix links, add cache#103

chalin merged 1 commit intotheupdateframework:docsytheupdateframework/theupdateframework.io:docsyfrom

chalin:chalin-im-external-link-checking-2024-10-05chalin/theupdateframework.io:chalin-im-external-link-checking-2024-10-05Copy head branch name to clipboard