Update _index.pt-br.md

[ligeirinho]

Thanks for contributing to the Selenium site and documentation!
A PR well described will help maintainers to quickly review and merge it

Before submitting your PR, please check our contributing guidelines.
Avoid large PRs, help reviewers by making them as simple and short as possible.

Description

Motivation and Context

Types of changes

• Change to the site (I have double-checked the Netlify deployment, and my changes look good)
• Code example added (and I also added the example to all translated languages)
• Improved translation
• [ x ] Added new translation (and I also added a notice to each document missing translation)

Checklist

• [ x ] I have read the contributing document.
• I have used hugo to render the site/docs locally and I am sure it works.

[CLAassistant]

All committers have signed the CLA.

[netlify]

✔️ Deploy Preview for jovial-austin-42fe02 ready!

🔨 Explore the source changes: 4479504

🔍 Inspect the deploy log: https://app.netlify.com/sites/jovial-austin-42fe02/deploys/61ec1143c15dcf00073df0a4

😎 Browse the preview: https://deploy-preview-936--jovial-austin-42fe02.netlify.app

[luisfcorreia]

looks ok

[harsha509]

Deploy preview looks good to me!
Thank you for review @luisfcorreia.
+1 Approved by @luisfcorreia