update the script for the tidy action

.github/workflows/tidy.yml

@@ -8,16 +8,14 @@ on:
 jobs:
   tidy:
     name: Tidy up
-    runs-on: macos-latest
+    runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - run: brew install tidy-html5
+      - uses: actions/checkout@v4
+      - name: Install tidy/html5
+        run: sudo apt-get install -y tidy
       - run: tidy -config tidyconfig.txt -o index.html index.html
-      - uses: peter-evans/create-pull-request@v3
+      - uses: peter-evans/create-pull-request@v5
         with:
-          title: "chore(tidy): tidy up document"
-          commit-message: "Tidied up document using tidy-html5"
+          title: "Tidied up document using tidy-html5"
+          commit-message: "chore: tidy up index.html"
           branch: html-tidy
-          # A custom token is needed to trigger further workflow runs
-          # https://github.com/peter-evans/create-pull-request/blob/master/docs/concepts-guidelines.md#triggering-further-workflow-runs
-          token: ${{ secrets.GH_TOKEN }}