Refined the doc in minor
Refined the doc in minor

apache/directory-kerby,drankye/directory-kerby,plusplusjiajia/directory-kerby,plusplusjiajia/directory-kerby,bitium/directory-kerby,plusplusjiajia/directory-kerby,bitium/directory-kerby,apache/directory-kerby,apache/directory-kerby,drankye/directory-kerby