cli: Fix help doc for apply subcommand
cli: Fix help doc for apply subcommand

The escape character is intended to be used literally, repeat them to
avoid format parser errors.

Signed-off-by: Fam Zheng <df9fd617995bad07eac70e27aa3fe5069270e3bd@redhat.com>

pvital/patchew,pvital/patchew,pvital/patchew,pvital/patchew