Make small sentence cleanups. Add missing formatting for program example.
Make small sentence cleanups. Add missing formatting for program example.

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