docs: update for v3

README.md

@@ -679,10 +679,10 @@ on:
       - master
 
 jobs:
-  build-deploy:
+  deploy:
     runs-on: ubuntu-18.04
     steps:
-    - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
 
       - name: Setup Python
         uses: actions/setup-python@v1
@@ -706,11 +706,10 @@ jobs:
       - run: mkdocs build
 
       - name: Deploy
-      uses: peaceiris/actions-gh-pages@v2
-      env:
-        ACTIONS_DEPLOY_KEY: ${{ secrets.ACTIONS_DEPLOY_KEY }}
-        PUBLISH_BRANCH: gh-pages
-        PUBLISH_DIR: ./site
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          deploy_key: ${{ secrets.ACTIONS_DEPLOY_KEY }}
+          publish_dir: ./site
 ```
 
 ### ⭐️ mdBook (Rust)
@@ -733,10 +732,7 @@ jobs:
   deploy:
     runs-on: ubuntu-18.04
     steps:
-
-    - uses: actions/checkout@v1
-      with:
-        fetch-depth: 1
+      - uses: actions/checkout@v2
 
       - name: Setup mdBook
         uses: peaceiris/actions-mdbook@v1
@@ -747,11 +743,10 @@ jobs:
       - run: mdbook build
 
       - name: Deploy
-      uses: peaceiris/actions-gh-pages@v2
+        uses: peaceiris/actions-gh-pages@v3
         env:
-        ACTIONS_DEPLOY_KEY: ${{ secrets.ACTIONS_DEPLOY_KEY }}
-        PUBLISH_BRANCH: gh-pages
-        PUBLISH_DIR: ./book
+          deploy_key: ${{ secrets.ACTIONS_DEPLOY_KEY }}
+          publish_dir: ./book
 ```
 
 ### ⭐️ Flutter Web