"map_loader_package" documentation is not clear.

[hakanaktass]

In the documentation named "map_loader package", there is a unclear situation about the file structure in the section that tells how to run multiple pcd files. If we need to run more than one pcd file in the logging simulator, we need to put the pcd files in the directory named "pointcloud_map.pcd". But in the documentation, this directory is shown as one file. This makes it very difficult to understand. It would be better for everyone if this unclear statement in the documentation is corrected. Thanks in advance.