Update docs.yml

Metadata is invalid type

.github/workflows/docs.yml

@@ -7,12 +7,11 @@ on:
     paths:
       - site/content/**
 
-permissions: {}
+permissions:
+  contents: read
+
 jobs:
   release:
-    permissions:
-      metadata: read #  (getsentry/action-github-app-token)
-
     name: Deploy docs
     runs-on: ubuntu-latest
     steps:
@@ -29,4 +28,4 @@ jobs:
           repo: 'svelte'
           branch: 'master'
           docs_path: 'site/content'
-          token: ${{ steps.github-app.outputs.token }}
+          token: ${{ steps.github-app.outputs.token }}