Add regexlearn.com (#4031)

aykutkardas · web-flow · commit 4a18ea35e920 · 2023-11-27T11:10:16.000-08:00
diff --git a/collections/learn-to-code/index.md b/collections/learn-to-code/index.md
@@ -36,6 +36,7 @@ items:
  - hexlet-basics/hexlet-basics
  - hexlet-codebattle/codebattle
  - Hexlet/hexletguides.github.io
+ - aykutkardas/regexlearn.com
 
 display_name: Learn to Code
 created_by: alysonla
