Use github-action-markdown-link-check to find broken links

Author: lemastero

.github/workflows/scala.yml

@@ -11,9 +11,7 @@ permissions:
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
-
     steps:
     - uses: actions/checkout@v4
     - name: Set up JDK
@@ -24,3 +22,11 @@ jobs:
         cache: 'sbt'
     - name: Run tests
       run: sbt test
+
+  markdown-link-check:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: gaurav-nelson/github-action-markdown-link-check@v1
+      with:
+        use-verbose-mode: 'yes'