[Trivial Fix] Replace Chinese punctuation with English punctuation
[Trivial Fix] Replace Chinese punctuation with English punctuation

Curly quotes(Chinese punctuation) usually input from Chinese input method.
When read from english context, it makes some confusion.

Change-Id: Icff538ce043d6c51e744e76d17d052e1755492bb

openstack/openstack-ansible-memcached_server,openstack/openstack-ansible-memcached_server