update config to new version

.github/workflows/stylua.yml

@@ -1,18 +1,20 @@
 # Check Lua Formatting
 name: Check Lua Formatting
-on: pull_request
+on: pull_request_target
 
 jobs:
   stylua-check:
+    if: github.repository == 'nvim-lua/kickstart.nvim'
     name: Stylua Check
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
         uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
       - name: Stylua Check
         uses: JohnnyMorganz/stylua-action@v3
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           version: latest
           args: --check .
-