CI: fixed the syntax in the cancel command

Author: EdCaunt

.github/workflows/cancel.yml

@@ -9,14 +9,14 @@ jobs:
     timeout-minutes: 3
     steps:
       - name: Cancel the core CI workflow
-      - uses: styfle/[email protected]
+        uses: styfle/[email protected]
         with:
           # Ids to cancel core
           # https://api.github.com/repos/devitocodes/devitoboundary/actions/workflows
           workflow_id: 2468423
           access_token: ${{ github.token }}
       - name: Cancel the 1st-order CI workflow
-      - uses: styfle/[email protected]
+        uses: styfle/[email protected]
         with:
           workflow_id: 14634840
           access_token: ${{ github.token }}