Ajustes de badges no README

[ThiagoPanini]

:bookmark_tabs: Descrição do PR: PR criado para ajustes pontuais de documentação na branch principal.

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:link: Issues contempladas: Nenhuma issue vinculada.

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:hammer: Tarefas realizadas:

• Ajuste no README.md em badges

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  :heavy_check_mark: Checklist:

• [x] O código desenvolvido seguiu as boas práticas contidas no repositório
• [x] As funcionalidades foram testadas adequadamente
• [x] Não existe risco de comprometimento do projeto como um todo

[codecov[bot]]

Codecov Report

Base: 79.07% // Head: 79.07% // No change to project coverage :thumbsup:

Coverage data is based on head (c734295) compared to base (89bf302). Patch has no changes to coverable lines.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #39 +/- ## ======================================= Coverage 79.07% 79.07% ======================================= Files 9 9 Lines 693 693 ======================================= Hits 548 548 Misses 145 145 ``` Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Thiago+Panini). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Thiago+Panini)

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