Add some tweaks to the pt_BR translations
minor #11419 [Validator] Add some tweaks to the pt_BR translations (andreia)

This PR was submitted for the master branch but it was merged into the 2.4 branch instead (closes #11419).

Discussion
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[Validator] Add some tweaks to the pt_BR translations

| Q             | A
| ------------- | ---
| Bug fix?      | no]
| New feature?  | [no]
| BC breaks?    | [no]
| Deprecations? | [no]
| Tests pass?   | [yes]
| Fixed tickets |
| License       | MIT
| Doc PR        |

Commits
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28424ee Add some tweaks to the pt_BR translations