[zanata/zanata-client] c1d525: docs(contributing): fixes the grammar

[GitHub]

  Branch: refs/heads/contributing
  Home:   https://github.com/zanata/zanata-client
  Commit: c1d52530b770f0553088b6128c4cc02d7db93bef
      https://github.com/zanata/zanata-client/commit/c1d52530b770f0553088b6128c4cc02d7db93bef
  Author: Ding-Yi Chen <dingyichen at gmail.com>
  Date:   2016-03-11 (Fri, 11 Mar 2016)

  Changed paths:
    M CONTRIBUTING.md

  Log Message:
  -----------
  docs(contributing): fixes the grammar