SWDEV-448163 - Fix Doxygen warnings

Change-Id: If72e312461a72920b6a482009c9aef4cf92f2e1b


[ROCm/hip-tests commit: 6c23e25c86]

projects/hip-tests/catch/unit/graph/hipGraphLaunch.cc

@@ -143,3 +143,8 @@ TEST_CASE("Unit_hipGraphLaunch_Negative_Parameters") {
     HIP_CHECK_ERROR(hipGraphLaunch(graph_exec, hipStreamPerThread), hipErrorInvalidValue);
   }
 }
+
+/**
+* End doxygen group GraphTest.
+* @}
+*/