actions syntax fix

Author: Daniel Hindrikes

.github/workflows/nuget-publish.yml

@@ -16,9 +16,8 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: |
-            dotnet-version: |
-              9.0.x
-              10.0.x
+            9.0.x
+            10.0.x
 
       - name: Restore dependencies
         run: dotnet restore