chore: revert "ci: fix spelling action failure (#926)" (#927)

Won't help, see
#926 (comment).

Author: ishymko

.github/workflows/spelling.yaml

@@ -1,7 +1,7 @@
 ---
 name: Check Spelling
 on:
-  pull_request_target:
+  pull_request:
     branches: ['**']
     types: [opened, reopened, synchronize]
   issue_comment:
@@ -11,7 +11,6 @@ jobs:
     name: Check Spelling
     permissions:
       contents: read
-      pull-requests: read
       actions: read
       security-events: write
     outputs: