Fix dead relative link to moved Git Worktrees page

Ways-of-Working content moved to MSXOrg/docs; point to the absolute URL instead of the now-nonexistent local relative path.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Author: MariusStorhaug

src/docs/Modules/Repository-Defaults.md

@@ -54,7 +54,7 @@ Local work should use the organization worktree convention:
 - `main/` tracks the default branch.
 - Feature worktrees use `<type>-<slug>` directories and `<type>/<slug>` branches.
 
-For branch and worktree details, see [Git Worktrees](../../Ways-of-Working/Git-Worktrees.md).
+For branch and worktree details, see [Git Worktrees](https://msxorg.github.io/docs/Ways-of-Working/Git-Worktrees/).
 
 ## Default repository layout