fix(worktree-lifecycle): use github.com as example in set-pr help

- Remove accidentally committed worktree directory

skills/kugetsu/scripts/kugetsu

@@ -2022,7 +2022,7 @@ main() {
             local pr_url="${2:-}"
             if [ -z "$issue_ref" ] || [ -z "$pr_url" ]; then
                 echo "Usage: kugetsu set-pr <issue-ref> <pr-url>" >&2
-                echo "Example: kugetsu set-pr github.com/shoko/kugetsu#14 https://git.fbrns.co/shoko/kugetsu/pulls/123" >&2
+                echo "Example: kugetsu set-pr github.com/shoko/kugetsu#14 https://github.com/shoko/kugetsu/pulls/123" >&2
                 exit 1
             fi
             validate_issue_ref "$issue_ref"