Update test-loop.yml

Author: RickyCartner

.github/workflows/test-loop.yml

@@ -53,7 +53,7 @@ jobs:
 
       - name: Print project-json variable
         run: |
-          echo ${{ toJson(needs.define-matrix.outputs.project-json) }}
+          echo ${{ toJson(needs.define-matrix.outputs.project-string) }}
 
       - name: Print project-string variable
         run: |