Fixed syntax

Author: teo-nikolov

.github/workflows/github-actions-tests-on-windows.yml

@@ -9,12 +9,14 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - name: Setup .NET 8 & 9 SDK
+      - name: Setup .NET 8 SDK
         uses: actions/setup-dotnet@v1.7.2
         with:
-          dotnet-version: |
-            8.0.x
-            9.0.x
+          dotnet-version: 8.0.x
+      - name: Setup .NET 9 SDK
+        uses: actions/setup-dotnet@v1.7.2
+        with:
+          dotnet-version: 9.0.x
       - name: Clean
         run: dotnet clean
       - name: Install dependencies