Update docs.yml

Author: dsyme

.github/workflows/docs.yml

@@ -28,9 +28,7 @@ jobs:
     - name: Checkout fsharp master
       run: git clone https://github.com/dotnet/fsharp --depth 1 fsharp -b feature/docs
     - name: Build fsharp master (turn of CI build status)
-      run: cd fsharp && .\build -noVisualStudio -ci -binaryLog
-      env:
-        UpdateXlfOnBuild: true
+      run: cd fsharp && eng\CIBuild.cmd
     - name: Checkout FSharp.Formatting master
       run: git clone https://github.com/fsprojects/FSharp.Formatting --depth 1 FSharp.Formatting 
     - name: Build FSharp.Formatting master