docs: exclude 'matlab' entry

Author: alalek

modules/matlab/cmake/init.cmake

@@ -18,3 +18,8 @@ if(WITH_MATLAB AND NOT DEFINED MATLAB_FOUND)
   set(MATLAB_FOUND "${MATLAB_FOUND}" PARENT_SCOPE)
   set(MATLAB_MEX_SCRIPT "${MATLAB_MEX_SCRIPT}" PARENT_SCOPE)
 endif()
+
+if(NOT OPENCV_DOCS_INCLUDE_MATLAB)
+  list(APPEND DOXYGEN_BLACKLIST "matlab")
+  set(DOXYGEN_BLACKLIST "${DOXYGEN_BLACKLIST}" PARENT_SCOPE)
+endif()