SWDEV-448163 - Fix Doxygen warnings

Change-Id: If72e312461a72920b6a482009c9aef4cf92f2e1b


[ROCm/hip-tests commit: 6c23e25c86]

projects/hip-tests/catch/unit/callback/hipGetStreamDeviceId.cc

@@ -110,3 +110,8 @@ TEST_CASE("Unit_hipGetStreamDeviceId_Negative_Parameters") {
   StreamGuard stream_guard{Streams::nullstream};
   REQUIRE(hipGetStreamDeviceId(stream_guard.stream()) == id);
 }
+
+/**
+* End doxygen group CallbackTest.
+* @}
+*/