COMPMID-418 Add check and fix comments after preprocessor conditions

Change-Id: I1353fd652ee180e3931e58b4ce13d651a48c7e2c
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/79567
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Moritz Pflanzer <moritz.pflanzer@arm.com>
diff --git a/tests/validation/system_tests/NEON/LeNet5.cpp b/tests/validation/system_tests/NEON/LeNet5.cpp
index 5a311ef..fedc119 100644
--- a/tests/validation/system_tests/NEON/LeNet5.cpp
+++ b/tests/validation/system_tests/NEON/LeNet5.cpp
@@ -89,5 +89,5 @@
 
 BOOST_AUTO_TEST_SUITE_END()
 BOOST_AUTO_TEST_SUITE_END()
-#endif
+#endif /* DOXYGEN_SKIP_THIS */
 #endif /* INTERNAL_ONLY */