Fix grammatical errors in asible docs

Minor fix in ansible deployment docs related to grammar.

Change-Id: Ied565987474552ab733b10c3745dcf88c36753ca

docs/ansible-deployment.md

 Kolla with Ansible!
 ============================
 
-Kolla will supports deploying Openstack using [Ansible][].
+Kolla supports deploying Openstack using [Ansible][].
 
 [Ansible]: https://docs.ansible.com