one more tweak

Author: bobbrow

Extension/src/LanguageServer/cppBuildTaskProvider.ts

@@ -303,7 +303,7 @@ export class CppBuildTaskProvider implements TaskProvider {
             const newTask: any = {
                 ...selectedTask.definition,
                 problemMatcher: selectedTask.problemMatchers,
-                group: setAsDefault ? { kind: "build", "isDefault": true } : "build",
+                group: setAsDefault ? { kind: "build", isDefault: true } : "build",
                 detail: localize("task.generated.by.debugger", "Task generated by Debugger.")
             };
             rawTasksJson.tasks.push(newTask);