diff --git a/.github/workflows/test_of_push_and_pull.yml b/.github/workflows/test_of_push_and_pull.yml
index 4ee1316..af4cb32 100644
--- a/.github/workflows/test_of_push_and_pull.yml
+++ b/.github/workflows/test_of_push_and_pull.yml
@@ -1,37 +1,37 @@
-name: "Tests of push & pull"
+name: 'Tests of push & pull'
 
 on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
+    push:
+        # branches: [ main ]
+    pull_request:
+        # branches: [ main ]
 
 env:
-  FILENAME: README.md
+    FILENAME: README.md
 
 jobs:
-  tests:
-    name: 'Validate README.md changes'
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v2
+    tests:
+        name: 'Validate README.md changes'
+        runs-on: ubuntu-latest
+        steps:
+            - name: Checkout repository
+              uses: actions/checkout@v2
 
-      - name: Set up Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: '3.8'
+            - name: Set up Python
+              uses: actions/setup-python@v2
+              with:
+                  python-version: '3.8'
 
-      - name: Install dependencies
-        run: python -m pip install -r scripts/requirements.txt
+            - name: Install dependencies
+              run: python -m pip install -r scripts/requirements.txt
 
-      - name: Validate Markdown format
-        run: python scripts/validate/format.py ${FILENAME}
+            - name: Validate Markdown format
+              run: python scripts/validate/format.py ${FILENAME}
 
-      - name: Validate pull request changes
-        run: scripts/github_pull_request.sh ${{ github.repository }} ${{ github.event.pull_request.number }} ${FILENAME}
-        if: github.event_name == 'pull_request'
+            - name: Validate pull request changes
+              run: scripts/github_pull_request.sh ${{ github.repository }} ${{ github.event.pull_request.number }} ${FILENAME}
+              if: github.event_name == 'pull_request'
 
-      - name: Checking if push changes are duplicated
-        run: python scripts/validate/links.py ${FILENAME} --only_duplicate_links_checker
-        if: github.event_name == 'push'
+            - name: Checking if push changes are duplicated
+              run: python scripts/validate/links.py ${FILENAME} --only_duplicate_links_checker
+              if: github.event_name == 'push'
diff --git a/.github/workflows/test_of_validate_package.yml b/.github/workflows/test_of_validate_package.yml
index f739df8..1099c98 100644
--- a/.github/workflows/test_of_validate_package.yml
+++ b/.github/workflows/test_of_validate_package.yml
@@ -1,29 +1,29 @@
-name: "Tests of validate package"
+name: 'Tests of validate package'
 
 on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
+    push:
+        # branches: [ main ]
+    pull_request:
+        # branches: [ main ]
 
 jobs:
-  unittest:
-    name: 'Run tests of validate package'
-    runs-on: ubuntu-latest
+    unittest:
+        name: 'Run tests of validate package'
+        runs-on: ubuntu-latest
 
-    steps:
-    - name: Checkout repository
-      uses: actions/checkout@v2
+        steps:
+            - name: Checkout repository
+              uses: actions/checkout@v2
 
-    - name: Set up Python
-      uses: actions/setup-python@v2
-      with:
-        python-version: '3.8'
-    
-    - name: Install dependencies
-      run: python -m pip install -r scripts/requirements.txt
+            - name: Set up Python
+              uses: actions/setup-python@v2
+              with:
+                  python-version: '3.8'
 
-    - name: Run Unittest
-      run: |
-        cd scripts
-        python -m unittest discover tests/ --verbose
+            - name: Install dependencies
+              run: python -m pip install -r scripts/requirements.txt
+
+            - name: Run Unittest
+              run: |
+                  cd scripts
+                  python -m unittest discover tests/ --verbose
diff --git a/.github/workflows/validate_links.yml b/.github/workflows/validate_links.yml
index 951515d..862d5d2 100644
--- a/.github/workflows/validate_links.yml
+++ b/.github/workflows/validate_links.yml
@@ -1,28 +1,28 @@
-name: "Validate links"
+name: 'Validate links'
 
 on:
-  workflow_dispatch:
-  # schedule:
+    workflow_dispatch:
+    # schedule:
     # - cron:  '0 0 * * *'
 
 env:
-  FILENAME: README.md
+    FILENAME: README.md
 
 jobs:
-  validate_links:
-    name: 'Check all links are working'
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v2
+    validate_links:
+        name: 'Check all links are working'
+        runs-on: ubuntu-latest
+        steps:
+            - name: Checkout repository
+              uses: actions/checkout@v2
 
-      - name: Set up Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: '3.8'
+            - name: Set up Python
+              uses: actions/setup-python@v2
+              with:
+                  python-version: '3.8'
 
-      - name: Install dependencies
-        run: python -m pip install -r scripts/requirements.txt
+            - name: Install dependencies
+              run: python -m pip install -r scripts/requirements.txt
 
-      - name: Validate all links from README.md
-        run: python scripts/validate/links.py ${FILENAME}
+            - name: Validate all links from README.md
+              run: python scripts/validate/links.py ${FILENAME}