Added link to blog post

diff --git a/advent21/Main.hs b/advent21/Main.hs
index bdaf08a3397d7be34373845a4793561085f3334f..9c72046e2c8f9a08ad428af49eb22834a533adff 100644 (file)
--- a/advent21/Main.hs
+++ b/advent21/Main.hs
@@ -1,5 +1,4 @@
--- Writeup at https://work.njae.me.uk/2024/12/20/advent-of-code-2024-day-20/
-
+-- Writeup at https://work.njae.me.uk/2024/12/24/advent-of-code-2024-day-21/
 import AoC
 
 import Data.Char