Minor grammar and punctuation fixes
Minor grammar and punctuation fixes

Signed-off-by: C.J. Jameson <ec1b14366327ff10b752f9848cd5b8311e885007@pivotal.io>

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