Update irl-event tag to irl to be consistent with existing tags.

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: mrbiggred

docs/posts/2026/02/24/index.md

@@ -10,7 +10,7 @@ tags:
   - ctf
   - picoctf
   - pair-programming
-  - irl-event
+  - irl
   - edmonton
 pin: true
 ---