add workflow for checking broken links

.github/workflows/broken-link-checker.yml

@@ -0,0 +1,30 @@
+# Copyright the Hyperledger Fabric contributors. All rights reserved.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+name: "Broken link checker"
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "50 1 * * *"
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  broken-lint-checker:
+    name: "Check for broken links"
+    runs-on: fabric-ubuntu-latest
+    steps:
+      - name: Checkout Fabric Code
+        uses: actions/checkout@v3
+      - name: Build Documentation Website
+        run: make docs
+      - name: Check Broken Links
+        uses: ruzickap/action-my-broken-link-checker@v2
+        with:
+          pages_path: ./docs/docs/build/html
+          url: https://hyperledger-fabric.readthedocs.io/
+