Doxyfile: exclude build/

Doxyfile

@@ -875,7 +875,8 @@ RECURSIVE              = YES
 
 EXCLUDE                = "components/common/cpp/include/nlohmann/json.hpp" \
 						 "components/common/cpp/include/loguru.hpp" \
-						 "components/common/cpp/include/ctpl_stl.h"
+						 "components/common/cpp/include/ctpl_stl.h" \
+						 "build/"
 
 # The EXCLUDE_SYMLINKS tag can be used to select whether or not files or
 # directories that are symbolic links (a Unix file system feature) are excluded