Trivial doc tweaks.
Trivial doc tweaks.

roamz/mgo,tmc/mgo,raymondjacobson/mgo,jjz/mgo,DroiTaipei/mgo,velocity-toolkit/mgo,dmage/mgo,tobyzxj/mgo,deafgoat/mgo,DroiTaipei/mgo,Danzeer/mgo,raymondjacobson/mgo,gabrielrussell/mgo,lucasjo/mgo,jackspirou/mgo,tobyzxj/mgo,gabrielrussell/mgo,Yottaa/mgo.v2,Danzeer/mgo,mjs/mgo,deafgoat/mgo,tmc/mgo,tchajed/mgo,go-mgo/travis-test,jackspirou/mgo,hexadecy/mgo,lucasjo/mgo,henrylee2cn/mgo,mjs/mgo,tmc/mgo,SocialExplorerFork/mgo,tchajed/mgo,tmc/mgo,deafgoat/mgo,mcuadros/mgo,tchajed/mgo,mcuadros/mgo,mjs/mgo,lucasjo/mgo,jackspirou/mgo,DroiTaipei/mgo,jjz/mgo,mcuadros/mgo,hexadecy/mgo,go-mgo/travis-test,gabrielrussell/mgo,tobyzxj/mgo,deafgoat/mgo,lucasjo/mgo,henrylee2cn/mgo,SocialExplorerFork/mgo,hexadecy/mgo,tchajed/mgo,SocialExplorerFork/mgo,raymondjacobson/mgo,mcuadros/mgo,dmage/mgo,DroiTaipei/mgo,jjz/mgo,hexadecy/mgo,go-mgo/travis-test,Danzeer/mgo,SocialExplorerFork/mgo,jjz/mgo,Danzeer/mgo,tobyzxj/mgo,velocity-toolkit/mgo,Yottaa/mgo.v2,mjs/mgo,velocity-toolkit/mgo,go-mgo/travis-test,dmage/mgo,gabrielrussell/mgo,velocity-toolkit/mgo,raymondjacobson/mgo,Yottaa/mgo.v2,henrylee2cn/mgo,Yottaa/mgo.v2,tchajed/mgo,jackspirou/mgo,henrylee2cn/mgo,dmage/mgo