SWDEV-448163 - Fix Doxygen warnings

Change-Id: If72e312461a72920b6a482009c9aef4cf92f2e1b


[ROCm/hip-tests commit: 6c23e25c86]

projects/hip-tests/catch/unit/printf/printfFlags.cc

@@ -73,3 +73,8 @@ xyzzy
   REQUIRE(proc.run() == 0);
   REQUIRE(proc.getOutput() == reference);
 }
+
+/**
+* End doxygen group PrintfTest.
+* @}
+*/