Escape slashes

Author: paddyroddy

.github/workflows/links.yml

@@ -36,7 +36,7 @@ jobs:
             --exclude http://fsf.org
             --exclude docs/pages
             --exclude docs/_includes
-            --exclude-path '{{cookiecutter.project_slug}}/README.md'
+            --exclude-path ''\\{\\{cookiecutter.project_slug\\}\\}/README.md'
             --exclude-path 'tests/data'
             -- ."
           fail: true