Add link to Matrix group

content/blog/2024-02-28-early-show-and-tell-and-feedback.md

@@ -24,6 +24,8 @@ By that time, we'll also have some public code.
 There's no registration required. Meeting coordinates are [over at FediDevs.org](https://fedidevs.org/notes/2024-03-07/). Would love to get your input in particular if you disagree with me :-) ... otherwise how can we make it better?
 
 **Update March 7:** The code we'll be discussing is at:
+
 * [https://github.com/fediverse-devnet/feditest/, branch develop](https://github.com/fediverse-devnet/feditest/tree/develop): FediTest test framework
 * [https://github.com/fediverse-devnet/feditest-tests-fediverse/, branch develop](https://github.com/fediverse-devnet/feditest-tests-fediverse/tree/develop): A (small) set of the actual tests and example test plans
 
+And remember, we have a Matrix group specifically for FediTest at [https://matrix.to/#/#fediverse-testing:matrix.org](https://matrix.to/#/#fediverse-testing:matrix.org)