Adjust message when email or cpf already exists

Signed-off-by: Rafael Ravedutti <rrlmachado@inf.ufpr.br>
2 jobs for translation_fix in 4 minutes and 3 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Test
passed #28871
postgres ruby
test

00:01:21

 
  Build
passed #28872
build docker
build

00:02:41