Fix typos in readme file
Fix typos in readme file

rhalff/storybook,nlhuykhang/ddp-rate-limiter-mixin,storybooks/storybook,kadirahq/npm-base,storybooks/storybook,nfl/react-storybook,nlhuykhang/meteor-publish-join,storybooks/storybook,enjoylife/storybook,mantrajs/mantra-core,shilman/storybook,storybooks/storybook,rhalff/storybook,kadirahq/npm-base,nlhuykhang/ddp-rate-limiter-mixin,bigassdragon/storybook,nfl/react-storybook,nlhuykhang/reactive-var-std,jribeiro/storybook,rhalff/storybook,rhalff/storybook,shilman/storybook,shilman/storybook,shilman/storybook,kadirahq/react-storybook,nlhuykhang/reactive-var-std,bigassdragon/storybook,mantrajs/mantra-core,storybooks/storybook,kadirahq/react-storybook,storybooks/storybook,enjoylife/storybook,storybooks/storybook,jribeiro/storybook,nfl/react-storybook,rhalff/storybook,bigassdragon/storybook,storybooks/react-storybook,bigassdragon/storybook,enjoylife/storybook,nlhuykhang/ddp-rate-limiter-mixin,nfl/react-storybook,nlhuykhang/meteor-publish-join,enjoylife/storybook,storybooks/react-storybook,ORNAJS/orna-npm-base,ORNAJS/orna-npm-base,storybooks/react-storybook,okgrow/auto-analytics,storybooks/react-storybook,rhalff/storybook,jribeiro/storybook,okgrow/merge-graphql-schemas,nlhuykhang/reactive-var-std,jribeiro/storybook,storybooks/storyshots