docs(readme): remove hacktoberfest notice (#4685)

Co-authored-by: Alexandr Garbuzov <qwerty541zxc@gmail.com>

Author: opheliagoldstein

readme.md

@@ -98,9 +98,6 @@
 
 # Important Notices <!-- omit in toc -->
 
-> [!IMPORTANT]
-> Please note that we are NOT participating in Hacktoberfest this year. As a small team, we cannot handle the increased volume of PRs and issues that the event brings. We appreciate your understanding.
-
 > [!IMPORTANT]
 > Since the GitHub API only [allows 5k requests per hour per user account](https://docs.github.com/en/graphql/overview/resource-limitations), the public Vercel instance hosted on `https://github-readme-stats.vercel.app/api` could possibly hit the rate limiter (see [#1471](https://github.com/anuraghazra/github-readme-stats/issues/1471)). We use caching to prevent this from happening (see https://github.com/anuraghazra/github-readme-stats#common-options). You can turn off these rate limit protections by [deploying your own Vercel instance](#deploy-on-your-own).