fix vale permission syntax (#66)

Author: jeff-allen-mongo

.github/workflows/vale-tdbx.yml

@@ -8,9 +8,9 @@ jobs:
   vale:
     name: TDBX Vale rules
     runs-on: ubuntu-latest
-      permissions:
-        contents: read
-        pull-requests: write
+    permissions:
+      contents: read
+      pull-requests: write
     steps:
       - name: checkout
         uses: actions/checkout@master