chore(POLABO-39): 디스코드 연동 3차

.github/workflows/healthCheck.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Set status message
         id: set_message
         run: |
-          if [ "${{ steps.health_check.outputs.conclusion }}" == "success" ]; then
+          if [ "${{ steps.health_check.outputs.conclusion }}" == "OKSuccess" ]; then
             echo "::set-output name=message::Health check succeeded"
           else
             echo "::set-output name=message::Health check failed"