Add yaml tag

.github/workflows/tree.yml

@@ -1,38 +1,38 @@
-name: Tree
+name: !!str Tree
 
-on: workflow_dispatch
+on: !!str workflow_dispatch
 
-jobs:
-  generate-tree:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: write
+jobs: !!map
+  generate-tree: !!map
+    runs-on: !!str ubuntu-latest
+    permissions: !!map
+      contents: !!str write
 
-    steps:
-    - name: 'Checkout Repository'
-      uses: actions/checkout@v3
-      with:
-        persist-credentials: false
-        fetch-depth: 0
+    steps: !!seq
+    - name: !!str 'Checkout Repository'
+      uses: !!str actions/checkout@v3
+      with: !!map
+        persist-credentials: !!bool false
+        fetch-depth: !!int 0
 
-    - name: Running script
-      run: |
+    - name: !!str Running script
+      run: !!str |
         tree --noreport -I 'README.md|LICENSE|tree.txt' > tree.txt
         sed -i "15,100d" README.md
         echo '```' >> tree.txt 
         cat tree.txt >> README.md
 
-    - name: Showing result
-      run: cat README.md
+    - name: !!str Showing result
+      run: !!str cat README.md
 
-    - name: Commit files
-      run: |
+    - name: !!str Commit files
+      run: !!str |
         git config --local user.email "github-actions[bot]@users.noreply.github.com"
         git config --local user.name "github-actions[bot]"        
         git commit -am "Update tree"
 
-    - name: Push changes
-      uses: ad-m/github-push-action@master
+    - name: !!str Push changes
+      uses: !!str ad-m/github-push-action@master
       with:
-        github_token: ${{ secrets.GITHUB_TOKEN }}
-        branch: ${{ github.ref }}
+        github_token: !!str ${{ secrets.GITHUB_TOKEN }}
+        branch: !!str ${{ github.ref }}