Fix msbuild

Author: ReinforceZwei

.github/workflows/main.yml

@@ -29,7 +29,7 @@ jobs:
         uses: microsoft/setup-msbuild@v1
 
       - name: Build project
-        run: msbuild $GITHUB_WORKSPACE/MinecraftClient.sln 
+        run: msbuild "$GITHUB_WORKSPACE\MinecraftClient.sln"
 
       - name: Create Release
         id: create_release