m_map is a mapping tool, not even created by MathWorks and not part of the basic Matlab system. I have no idea why you think that the customizations to the builtin bar function in this article should also apply to m_map.
If you need assistance with m_map, contact its developer (https://www.eoas.ubc.ca/~rich/map.html)

I plot figure by m_map toolbox, the xticklabel will add to the yticklabel at the left-down corner, so I want to move down the xticklabel, but it didn’t work.

Is there any other way to do it?