fix matrix and branch name

.github/workflows/publish-docs.yml

@@ -3,27 +3,20 @@ name: Publish documentation
 on:
   push:
     branches:
-      - master
+      - main
 
 jobs:
   publish-docs:
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
 
     strategy:
       matrix:
-        os: [windows-latest, macos-latest, ubuntu-latest]
-        dotnet_version: [7.0.x]
         node_version: [18.x]
 
     steps:
       - name: Checkout git repo
         uses: actions/checkout@v3
 
-      - name: Set up Node.js
-        uses: actions/setup-node@v3
-        with:
-          node-version: '14'
-
       - name: Install Node and NPM
         uses: actions/setup-node@v3
         with: