fix a key in link checker action

Author: SarahAlidoost

.github/workflows/markdown-link-check.yml

@@ -14,7 +14,7 @@ jobs:
     name: Check markdown links
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: umbrelladocs/action-linkspector@v1
       with:
-        config-file: '.linkspector.yml'
+        config_file: '.linkspector.yml'