typo-fix readme (#1792)
typo-fix readme (#1792)

remove duplicate link of same video
cpojer/jest,bookman25/jest,blainekasten/jest,bookman25/jest,mpontus/jest,aaron-goshine/jest,skovhus/jest,facebook/jest,aaron-goshine/jest,cpojer/jest,ide/jest,facebook/jest,cpojer/jest,mpontus/jest,blainekasten/jest,skovhus/jest,ide/jest,mpontus/jest,facebook/jest,blainekasten/jest,skovhus/jest,ide/jest,bookman25/jest,aaron-goshine/jest