Don't fail job if `zola check` fails
Don't fail job if `zola check` fails

The external link checker of the `zola check` command has false positives, e.g. https://github.com/getzola/zola/issues/805.

phil-opp/blogOS,phil-opp/blog_os,phil-opp/blog_os,phil-opp/blogOS,phil-opp/blog_os,phil-opp/blog_os