Update intro.md

[Awokein]

Doesn't seem like this is necessary.

Please replace this sentence with the details of your pull request; make sure you leave in and tick the declarations below.

Declarations:

• [✅] I declare that this contribution was created in whole or in part by me
• [✅ ] I declare that I have the right to submit this contribution under the terms of this repository's license and declarations.
• [✅ ] I understand and agree that this contribution and a record of it are public, maintained permanently, and may be redistributed infinitely under the terms of this repository's license.

In other words, you assert that you hold the copyright for your contribution and you agree that your contribution may be redistributed under the terms of the license

[evaera]

More spam

[autonordev]

This is, in fact, necessary to ensure that the introduction file always appears at the top of the Docusaurus sidebar hierarchy. Without it, the introduction will appear at the end of the list (as Docusaurus sorts alphabetically). Please test and consider changes before making them in future, rather than merely attempting to attain contributor status through junk PRs.