fixed repo link and added ref

Author: JohnTurnerNIH

Diff for: .github/workflows/check-links.yaml

@@ -22,8 +22,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
         with:
-            repository: NIGMS/NIGMS-Sandbox/.github/workflows/notebook-lint.yaml@main
+            repository: NIGMS/NIGMS-Sandbox
             path: reusable-workflow-repo
+            ref: reusable_workflow
 
       - name: Link Check
         run: |

Diff for: .github/workflows/notebook-lint.yaml

@@ -21,7 +21,8 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
         with:
-          repository: NIGMS/NIGMS-Sandbox/.github/workflows/notebook-lint.yaml@main
+          repository: NIGMS/NIGMS-Sandbox
+          ref: reusable_workflow
           path: reusable-workflow-repo
 
       - name: Set up Python