Slight wording improvement in documentation.
Slight wording improvement in documentation.

arcivanov/postgres-xl,arcivanov/postgres-xl,tangp3/gpdb,Chibin/gpdb,lpetrov-pivotal/gpdb,Quikling/gpdb,rvs/gpdb,tpostgres-projects/tPostgres,kaknikhil/gpdb,postmind-net/postgres-xl,yuanzhao/gpdb,greenplum-db/gpdb,xuegang/gpdb,royc1/gpdb,chrishajas/gpdb,yuanzhao/gpdb,edespino/gpdb,jmcatamney/gpdb,ahachete/gpdb,lpetrov-pivotal/gpdb,CraigHarris/gpdb,tangp3/gpdb,adam8157/gpdb,zeroae/postgres-xl,zaksoup/gpdb,janebeckman/gpdb,rvs/gpdb,zeroae/postgres-xl,CraigHarris/gpdb,techdragon/Postgres-XL,0x0FFF/gpdb,Chibin/gpdb,arcivanov/postgres-xl,lpetrov-pivotal/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,oberstet/postgres-xl,ahachete/gpdb,ahachete/gpdb,edespino/gpdb,janebeckman/gpdb,tangp3/gpdb,tangp3/gpdb,50wu/gpdb,zaksoup/gpdb,chrishajas/gpdb,randomtask1155/gpdb,arcivanov/postgres-xl,oberstet/postgres-xl,xinzweb/gpdb,Chibin/gpdb,arcivanov/postgres-xl,tangp3/gpdb,ahachete/gpdb,lintzc/gpdb,xuegang/gpdb,50wu/gpdb,greenplum-db/gpdb,tpostgres-projects/tPostgres,50wu/gpdb,0x0FFF/gpdb,lpetrov-pivotal/gpdb,rubikloud/gpdb,zeroae/postgres-xl,yazun/postgres-xl,Quikling/gpdb,cjcjameson/gpdb,foyzur/gpdb,adam8157/gpdb,lintzc/gpdb,kaknikhil/gpdb,CraigHarris/gpdb,0x0FFF/gpdb,yazun/postgres-xl,royc1/gpdb,cjcjameson/gpdb,chrishajas/gpdb,zaksoup/gpdb,lintzc/gpdb,rubikloud/gpdb,yazun/postgres-xl,lisakowen/gpdb,ahachete/gpdb,randomtask1155/gpdb,janebeckman/gpdb,zaksoup/gpdb,foyzur/gpdb,lisakowen/gpdb,rubikloud/gpdb,rvs/gpdb,randomtask1155/gpdb,greenplum-db/gpdb,lintzc/gpdb,edespino/gpdb,kmjungersen/PostgresXL,atris/gpdb,lisakowen/gpdb,chrishajas/gpdb,pavanvd/postgres-xl,CraigHarris/gpdb,snaga/postgres-xl,kmjungersen/PostgresXL,Quikling/gpdb,kaknikhil/gpdb,royc1/gpdb,50wu/gpdb,Postgres-XL/Postgres-XL,ovr/postgres-xl,cjcjameson/gpdb,CraigHarris/gpdb,adam8157/gpdb,oberstet/postgres-xl,randomtask1155/gpdb,edespino/gpdb,Quikling/gpdb,randomtask1155/gpdb,jmcatamney/gpdb,jmcatamney/gpdb,Postgres-XL/Postgres-XL,cjcjameson/gpdb,janebeckman/gpdb,foyzur/gpdb,lpetrov-pivotal/gpdb,janebeckman/gpdb,lisakowen/gpdb,50wu/gpdb,kaknikhil/gpdb,rubikloud/gpdb,xuegang/gpdb,tangp3/gpdb,postmind-net/postgres-xl,rvs/gpdb,jmcatamney/gpdb,jmcatamney/gpdb,Quikling/gpdb,ahachete/gpdb,edespino/gpdb,adam8157/gpdb,ovr/postgres-xl,kmjungersen/PostgresXL,jmcatamney/gpdb,randomtask1155/gpdb,Quikling/gpdb,atris/gpdb,edespino/gpdb,randomtask1155/gpdb,yuanzhao/gpdb,greenplum-db/gpdb,xuegang/gpdb,adam8157/gpdb,foyzur/gpdb,cjcjameson/gpdb,atris/gpdb,chrishajas/gpdb,techdragon/Postgres-XL,rvs/gpdb,xuegang/gpdb,Chibin/gpdb,pavanvd/postgres-xl,kmjungersen/PostgresXL,yuanzhao/gpdb,lisakowen/gpdb,rubikloud/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,postmind-net/postgres-xl,yuanzhao/gpdb,atris/gpdb,zeroae/postgres-xl,50wu/gpdb,xinzweb/gpdb,xinzweb/gpdb,randomtask1155/gpdb,zaksoup/gpdb,techdragon/Postgres-XL,tpostgres-projects/tPostgres,Chibin/gpdb,Chibin/gpdb,snaga/postgres-xl,foyzur/gpdb,zaksoup/gpdb,lintzc/gpdb,zaksoup/gpdb,kaknikhil/gpdb,jmcatamney/gpdb,0x0FFF/gpdb,Postgres-XL/Postgres-XL,Postgres-XL/Postgres-XL,CraigHarris/gpdb,ashwinstar/gpdb,ovr/postgres-xl,Quikling/gpdb,rubikloud/gpdb,pavanvd/postgres-xl,rvs/gpdb,CraigHarris/gpdb,foyzur/gpdb,janebeckman/gpdb,ashwinstar/gpdb,xinzweb/gpdb,adam8157/gpdb,zeroae/postgres-xl,lisakowen/gpdb,ahachete/gpdb,Postgres-XL/Postgres-XL,cjcjameson/gpdb,atris/gpdb,edespino/gpdb,CraigHarris/gpdb,xinzweb/gpdb,oberstet/postgres-xl,greenplum-db/gpdb,lpetrov-pivotal/gpdb,ashwinstar/gpdb,rvs/gpdb,snaga/postgres-xl,arcivanov/postgres-xl,cjcjameson/gpdb,zaksoup/gpdb,rvs/gpdb,lintzc/gpdb,xuegang/gpdb,kaknikhil/gpdb,pavanvd/postgres-xl,janebeckman/gpdb,snaga/postgres-xl,kaknikhil/gpdb,tpostgres-projects/tPostgres,Chibin/gpdb,cjcjameson/gpdb,edespino/gpdb,ovr/postgres-xl,xinzweb/gpdb,chrishajas/gpdb,royc1/gpdb,kaknikhil/gpdb,lisakowen/gpdb,50wu/gpdb,atris/gpdb,50wu/gpdb,xinzweb/gpdb,xinzweb/gpdb,ashwinstar/gpdb,snaga/postgres-xl,janebeckman/gpdb,royc1/gpdb,xuegang/gpdb,atris/gpdb,jmcatamney/gpdb,cjcjameson/gpdb,edespino/gpdb,Chibin/gpdb,foyzur/gpdb,lisakowen/gpdb,Chibin/gpdb,rvs/gpdb,Chibin/gpdb,CraigHarris/gpdb,techdragon/Postgres-XL,oberstet/postgres-xl,lpetrov-pivotal/gpdb,chrishajas/gpdb,adam8157/gpdb,atris/gpdb,janebeckman/gpdb,kaknikhil/gpdb,yuanzhao/gpdb,lintzc/gpdb,adam8157/gpdb,yuanzhao/gpdb,ashwinstar/gpdb,xuegang/gpdb,xuegang/gpdb,edespino/gpdb,Quikling/gpdb,rvs/gpdb,yazun/postgres-xl,techdragon/Postgres-XL,lpetrov-pivotal/gpdb,lintzc/gpdb,pavanvd/postgres-xl,ashwinstar/gpdb,cjcjameson/gpdb,janebeckman/gpdb,lintzc/gpdb,kaknikhil/gpdb,royc1/gpdb,yuanzhao/gpdb,yuanzhao/gpdb,rubikloud/gpdb,tangp3/gpdb,royc1/gpdb,rubikloud/gpdb,kmjungersen/PostgresXL,foyzur/gpdb,yazun/postgres-xl,ahachete/gpdb,tangp3/gpdb,Quikling/gpdb,greenplum-db/gpdb,Quikling/gpdb,chrishajas/gpdb,ovr/postgres-xl,postmind-net/postgres-xl,royc1/gpdb,yuanzhao/gpdb,0x0FFF/gpdb,0x0FFF/gpdb,0x0FFF/gpdb,0x0FFF/gpdb,postmind-net/postgres-xl,tpostgres-projects/tPostgres