Fix readme on stripUnknown.
Fix readme on stripUnknown.

jeffbski/joi,thethanghn/react-native-joi,lloydbenson/joi,danielb2/joi,davidbenko9/joi,jagoda/joi,tpiecora/joi,ck-lee/joi,geminiyellow/joi,pikselpalette/joi,robertherber/joi-extended,opyate/joi,bananaoomarang/joi,cesarmarinhorj/joi,rmoorman/joi,naitsric/joi