Update msbuild.yml

.github/workflows/msbuild.yml

@@ -1,16 +1,18 @@
 name: MSBuild
 
 on:
-  workflow_call:
-    inputs:
-      branch:
-        description: 'The name of the branch to checkout and build'
-        required: true
-        type: string
-  
+  push:
+    branches: [ "aboveS20", "belowS20" ]
+  pull_request:
+    branches: [ "aboveS20", "belowS20" ]
 
 env:
+  # Path to the solution file relative to the root of the project.
   SOLUTION_FILE_PATH: .
+
+  # Configuration type to build.
+  # You can convert this to a build matrix if you need coverage of multiple configuration types.
+  # https://docs.github.com/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
   BUILD_CONFIGURATION: Release
 
 permissions:
@@ -34,6 +36,8 @@ jobs:
 
     - name: Build
       working-directory: ${{env.GITHUB_WORKSPACE}}
+      # Add additional options to the MSBuild command line here (like platform or verbosity level).
+      # See https://docs.microsoft.com/visualstudio/msbuild/msbuild-command-line-reference
       run: msbuild /m /p:Configuration=${{env.BUILD_CONFIGURATION}} ${{env.SOLUTION_FILE_PATH}}
 
     - name: Upload Release Artifact