Fix typos on Sponsorship page
Fix typos on Sponsorship page

emorikawa/brooklynjs.github.io,brooklynjs/brooklynjs.github.io,emorikawa/brooklynjs.github.io,maryrosecook/brooklynjs.github.io,maryrosecook/brooklynjs.github.io,brooklynjs/brooklynjs.github.io