Docs: fix Reddit URL to avoid redirection (#39777)

Author: julien-deramond

README.md

@@ -177,7 +177,7 @@ Get updates on Bootstrap's development and chat with the project maintainers and
 - Follow [@getbootstrap on Twitter](https://twitter.com/getbootstrap).
 - Read and subscribe to [The Official Bootstrap Blog](https://blog.getbootstrap.com/).
 - Ask questions and explore [our GitHub Discussions](https://github.com/twbs/bootstrap/discussions).
-- Discuss, ask questions, and more on [the community Discord](https://discord.gg/bZUvakRU3M) or [Bootstrap subreddit](https://reddit.com/r/bootstrap).
+- Discuss, ask questions, and more on [the community Discord](https://discord.gg/bZUvakRU3M) or [Bootstrap subreddit](https://www.reddit.com/r/bootstrap/).
 - Chat with fellow Bootstrappers in IRC. On the `irc.libera.chat` server, in the `#bootstrap` channel.
 - Implementation help may be found at Stack Overflow (tagged [`bootstrap-5`](https://stackoverflow.com/questions/tagged/bootstrap-5)).
 - Developers should use the keyword `bootstrap` on packages which modify or add to the functionality of Bootstrap when distributing through [npm](https://www.npmjs.com/browse/keyword/bootstrap) or similar delivery mechanisms for maximum discoverability.