[ci skip] fix bug in auto-approve workflow

.github/workflows/auto-approve.yml

@@ -18,12 +18,12 @@ jobs:
       - name: check requester
         run: |
           # fail job if the requester is not a member of the organization
-          
+
           curl -s -H "Authorization: token ${{ secrets.READ_KOSLI_GH_ORG_MEMBERS }}" \
             https://api.github.com/orgs/kosli-dev/members \
             | jq -r ".[].login" \
+            | grep -w "${{ github.event.pull_request.user.login }}"
           result=$?
-          echo $result
 
           if [[ $result -eq 0 ]]; then
             echo "User ${{ github.event.pull_request.user.login }} is a member of kosli-dev"