Update portuguese translation (#28823)
Update portuguese translation (#28823)

The name of "Promise" was translated to portuguese, "Promessa", but since it's a name, it should reamin the original name.
Some code examples had been changed. I returned to the original, and only translated the comments.
BhaveshSGupta/FreeCodeCamp,jonathanihm/freeCodeCamp,BhaveshSGupta/FreeCodeCamp,raisedadead/FreeCodeCamp,FreeCodeCamp/FreeCodeCamp,jonathanihm/freeCodeCamp,BhaveshSGupta/FreeCodeCamp,FreeCodeCamp/FreeCodeCamp,raisedadead/FreeCodeCamp