SWDEV-448163 - Fix Doxygen warnings

Change-Id: If72e312461a72920b6a482009c9aef4cf92f2e1b

catch/unit/module/hipExtModuleLaunchKernel.cc

@@ -285,3 +285,8 @@ TEST_CASE("Unit_hipExtModuleLaunchKernel_Positive_Parameters") {
 TEST_CASE("Unit_hipExtModuleLaunchKernel_Negative_Parameters") {
   ModuleLaunchKernelNegativeParameters<hipExtModuleLaunchKernel>();
 }
+
+/**
+* End doxygen group KernelTest.
+* @}
+*/