fix: avoid printing period after localhost URL

[Zamiell]

When you type npm run serve, Docusaurus will output the following text to your terminal:

[SUCCESS] Serving "docs" directory at http://localhost:3000/.

The next step at this point is to copy the text from the terminal, and then paste it into your browser.
However, the trailing period interferes with this, as it is not part of the URL. and makes it difficult to properly copy the intended text. Thus, this PR.

Related:
When doing npm run start, the page automatically opens in your browser, which is helpful.
Why doesn't this behavior also apply to npm run serve?

[Josh-Cena]

Why doesn't this behavior also apply to npm run serve?

Happy to have a PR that ports the open-in-browser behavior to serve as well!

[Zamiell]

Ok, I'll see if I can manage it.

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[github-actions]

⚡️ Lighthouse report for the deploy preview of this PR

URL	Performance	Accessibility	Best Practices	SEO	PWA	Report
/	🟠 70	🟢 100	🟢 100	🟢 100	🟢 90	Report
/docs/installation	🟠 84	🟢 99	🟢 100	🟢 100	🟢 90	Report

[Josh-Cena]

Can we remove the period for start as well?

[Zamiell]

Oh, sure.

[Josh-Cena]

Makes sense; thanks!