Update pt-br.js
Update pt-br.js

No need for the 'year' word. Fixed the 'preview' word (correct orthography).
baiyaaaaa/element,pengchongfu/element,Leopoldthecoder/element-1,jsyczhanghao/element,renxia/element,immissile/m-element,immissile/m-element,ElemeFE/element,engriary/element,youngerheart/element,renxia/element,JavascriptTips/element,imyzf/element,engriary/element,reverland/element,huguangju/element,reverland/element,iamnewsea/element-pzx,Kingwl/element,Leopoldthecoder/element-1,ElemeFE/element,pengchongfu/element,iamnewsea/element-pzx,huguangju/element,JavascriptTips/element,Raganof/element,baiyaaaaa/element,youngerheart/element,Kingwl/element,Raganof/element,imyzf/element