Fix comma placement in global.json template

Co-authored-by: Youssef1313 <[email protected]>

Author: Copilot

template_feed/Microsoft.DotNet.Common.ItemTemplates/content/GlobalJson/global.json

@@ -4,8 +4,7 @@
     "rollForward": "ROLL_FORWARD_VALUE",
     //#endif
     "version": "SDK_VERSION"
-  }
-  //#if (TestRunner=="")
+  }//#if (TestRunner=="")
   //#else
   ,
   "test": {