Docs: minor edits and fixes.
Docs: minor edits and fixes.

cjcjameson/gpdb,Chibin/gpdb,Chibin/gpdb,Quikling/gpdb,adam8157/gpdb,rvs/gpdb,kaknikhil/gpdb,ashwinstar/gpdb,jmcatamney/gpdb,Quikling/gpdb,yuanzhao/gpdb,Chibin/gpdb,rvs/gpdb,Quikling/gpdb,cjcjameson/gpdb,jmcatamney/gpdb,50wu/gpdb,kaknikhil/gpdb,yuanzhao/gpdb,janebeckman/gpdb,rvs/gpdb,lisakowen/gpdb,greenplum-db/gpdb,kaknikhil/gpdb,yuanzhao/gpdb,kaknikhil/gpdb,Quikling/gpdb,xinzweb/gpdb,greenplum-db/gpdb,50wu/gpdb,jmcatamney/gpdb,janebeckman/gpdb,50wu/gpdb,edespino/gpdb,xinzweb/gpdb,Quikling/gpdb,yuanzhao/gpdb,cjcjameson/gpdb,50wu/gpdb,Quikling/gpdb,lisakowen/gpdb,ashwinstar/gpdb,cjcjameson/gpdb,jmcatamney/gpdb,ashwinstar/gpdb,kaknikhil/gpdb,cjcjameson/gpdb,xinzweb/gpdb,Chibin/gpdb,greenplum-db/gpdb,cjcjameson/gpdb,xinzweb/gpdb,rvs/gpdb,Quikling/gpdb,adam8157/gpdb,lisakowen/gpdb,Quikling/gpdb,lisakowen/gpdb,50wu/gpdb,Chibin/gpdb,50wu/gpdb,edespino/gpdb,edespino/gpdb,xinzweb/gpdb,janebeckman/gpdb,cjcjameson/gpdb,adam8157/gpdb,yuanzhao/gpdb,rvs/gpdb,50wu/gpdb,rvs/gpdb,Quikling/gpdb,Chibin/gpdb,rvs/gpdb,adam8157/gpdb,xinzweb/gpdb,edespino/gpdb,edespino/gpdb,greenplum-db/gpdb,rvs/gpdb,edespino/gpdb,rvs/gpdb,Chibin/gpdb,ashwinstar/gpdb,lisakowen/gpdb,janebeckman/gpdb,kaknikhil/gpdb,yuanzhao/gpdb,adam8157/gpdb,edespino/gpdb,edespino/gpdb,adam8157/gpdb,kaknikhil/gpdb,lisakowen/gpdb,yuanzhao/gpdb,jmcatamney/gpdb,Quikling/gpdb,greenplum-db/gpdb,cjcjameson/gpdb,yuanzhao/gpdb,adam8157/gpdb,edespino/gpdb,janebeckman/gpdb,Chibin/gpdb,lisakowen/gpdb,greenplum-db/gpdb,kaknikhil/gpdb,greenplum-db/gpdb,edespino/gpdb,kaknikhil/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,janebeckman/gpdb,50wu/gpdb,lisakowen/gpdb,jmcatamney/gpdb,janebeckman/gpdb,yuanzhao/gpdb,Chibin/gpdb,ashwinstar/gpdb,janebeckman/gpdb,yuanzhao/gpdb,ashwinstar/gpdb,ashwinstar/gpdb,xinzweb/gpdb,rvs/gpdb,jmcatamney/gpdb,cjcjameson/gpdb,kaknikhil/gpdb,jmcatamney/gpdb,janebeckman/gpdb,cjcjameson/gpdb,Chibin/gpdb,xinzweb/gpdb,janebeckman/gpdb,adam8157/gpdb