This part is also wrong:
"$ openstack quota set --QUOTA_NAME QUOTA_VALUE PROJECT_OR_CLASS"
Because PROJECT_OR_CLASS will need to have the --class option if it's a class and not a project.
This part is also wrong:
"$ openstack quota set --QUOTA_NAME QUOTA_VALUE PROJECT_OR_CLASS"
Because PROJECT_OR_CLASS will need to have the --class option if it's a class and not a project.