OAK-1360: Rename o.a.j.o.plugins.mongomk to o.a.j.o.plugins.document
- update documentation

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1562061 13f79535-47bb-0310-9956-ffa450edef68
OAK-1360: Rename o.a.j.o.plugins.mongomk to o.a.j.o.plugins.document
- rename mongomk to documentmk

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1562062 13f79535-47bb-0310-9956-ffa450edef68