ci: request-reviewers: add missing permission and fix modules path (#1825)

Fixes: b4e1daad3b ("ci: request subsystem maintainers review (#1053)")
Link: https://github.com/nix-community/stylix/pull/1825

Reviewed-by: Matt Sturgeon <matt@sturgeon.me.uk>
Reviewed-by: NAHO <90870942+trueNAHO@users.noreply.github.com>

.github/workflows/request-reviewers.yml

@@ -5,7 +5,7 @@ on:
   pull_request_target:
     types: [opened, ready_for_review, reopened, synchronize]
     paths:
-      - 'modules/'
+      - 'modules/**'
 
 jobs:
   request-reviewers:
@@ -29,6 +29,7 @@ jobs:
         with:
           app-id: ${{ vars.APP_ID }}
           private-key: ${{ secrets.APP_PRIVATE_KEY }}
+          permission-members: read
           permission-contents: read
           permission-pull-requests: write