Added "**/*.md" to paths

Author: adamlui

.github/workflows/validate-links-on-push-pr.yml

@@ -18,3 +18,5 @@ jobs:
     steps:
       - uses: actions/checkout@v6.0.2
       - uses: JustinBeckwith/linkinator-action@v1
+        with:
+          paths: "**/*.md"