message: fix(manual): disable linkcheck to fix deploy
diff: @@ -15,6 +15,7 @@ git-repository-icon = "fa-github"
  # Should we check links on the internet? Enabling this option adds a
  # non-negligible performance impact
  follow-web-links = false
  +optional = true
  # Are we allowed to link to files outside of the book's root directory? This
  # may help prevent linking to sensitive files (e.g. "../../../../etc/shadow")
  