Fix typo in Spanish README.
Fix typo in Spanish README.

Rayheng/sinatra,nicoayala/sinatra,mwpastore/sinatra,burningTyger/sinatra,dariubs/sinatra,kyontan/sinatra,mwpastore/sinatra,sinatra/sinatra,blambeau/sinatra,mwpastore/sinatra,burningTyger/sinatra,ryanshaw/sinatra,burningTyger/sinatra,nottombrown/old-sinatra,miyazawatomoka/sinatra,DoraALin/sinatra,ryanshaw/sinatra,emiliocorpus/sinatra,RosenDimov/sinatra,miyazawatomoka/sinatra,autopp/sinatra,d-bot/sinatra,guidohcosta/sinatra,twanies/sinatra,QLGu/sinatra,d-bot/sinatra,sethuster/sinatra,kumji/sinatra,kyontan/sinatra,gferguson-gd/sinatra,cyberid41/sinatra,guidohcosta/sinatra,autopp/sinatra,jenalgit/sinatra,ganmacs/sinatra,Wirachmat/sinatra,howtolearntocode/sinatra,frechei/sinatra,siberianbear/sinatra,twanies/sinatra,eileencodes/sinatra,QLGu/sinatra,ksw2599/sinatra,JonRowe/sinatra,trexnix/sinatra,JonMidhir/sinatra,davydovanton/sinatra,siberianbear/sinatra,ktw1222/sinatra,jkowens/sinatra,wzheng1/sinatra,defsprite/sinatra,Rayheng/sinatra,nju520/sinatra,frechei/sinatra,JonRowe/sinatra,porras/sinatra,JonMidhir/sinatra,nottombrown/old-sinatra,defsprite/sinatra,cyberid41/sinatra,ABaldwinHunter/sinatra-classic,RosenDimov/sinatra,porras/sinatra,laplaceliu/sinatra,Callygraphy/morrissey,lastcat/sinatra,nicoayala/sinatra,bmizerany/sinatra,howtolearntocode/sinatra,nju520/sinatra,JonMidhir/sinatra,eileencodes/sinatra,lastcat/sinatra,jkowens/sinatra,dariubs/sinatra,sethuster/sinatra,kumji/sinatra,ganmacs/sinatra,ksw2599/sinatra,wzheng1/sinatra,ktw1222/sinatra,marocchino/sinatra,midorineko/sinatra,midorineko/sinatra,emiliocorpus/sinatra,DoraALin/sinatra,sinatra/sinatra,ABaldwinHunter/sinatra-classic,davydovanton/sinatra,jenalgit/sinatra,trexnix/sinatra,jkowens/sinatra,kgrz/sinatra,Wirachmat/sinatra,gferguson-gd/sinatra,laplaceliu/sinatra