Update target branch for documentation workflow

.github/workflows/documentation.yml

@@ -10,13 +10,16 @@ on:
       - '**.yaml'
       - '**.json'
 
+env:
+  SSH_AUTH_SOCK: /tmp/ssh_agent.sock
+
 jobs:
   build_documentation:
     name: Build documentation
     runs-on: ubuntu-latest
     permissions:
       contents: read
-    if: ${{ github.ref == 'refs/heads/master' }}
+    if: ${{ github.ref == 'refs/heads/main' }}
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v2
@@ -41,15 +44,11 @@ jobs:
         run: npx redoc-cli bundle docs/swagger.yaml --output index.html
 
       - name: Setup SSH keys and known_hosts
-        env:
-          SSH_AUTH_SOCK: /tmp/ssh_agent.sock
         run: |
           ssh-agent -a $SSH_AUTH_SOCK > /dev/null
           ssh-add - <<< "${{ secrets.WEBSITE_DEPLOY_KEY }}"
 
       - name: Checkout website
-        env:
-          SSH_AUTH_SOCK: /tmp/ssh_agent.sock
         run: mkdir website && git clone git@github.com:pushbits/website.git website
 
       - name: Copy index.html
@@ -59,8 +58,6 @@ jobs:
         run: git config --global user.email "pipeline@pushbits.io" && git config --global user.name "PushBits Pipeline"
 
       - name: Commit and push
-        env:
-          SSH_AUTH_SOCK: /tmp/ssh_agent.sock
         run: |
           cd website
           git diff --quiet || ( git add . && git commit -m "Update documentation to ${{ github.sha }}" && git push )