Update day01.md (#853)

Author: YannMoisan

docs/2025/puzzles/day01.md

@@ -295,5 +295,7 @@ def part2(input: String) =
 
 - [Solution](https://github.com/rmarbeck/advent2025/blob/main/day1/src/main/scala/Solution.scala) by [Raphaël Marbeck](https://github.com/rmarbeck)
 
+- [Solution](https://github.com/YannMoisan/advent-of-code/blob/master/2025/src/main/scala/Day1.scala) by [Yann Moisan](https://github.com/YannMoisan)
+
 Share your solution to the Scala community by editing this page.
 You can even write the whole article! [See here for the expected format](https://github.com/scalacenter/scala-advent-of-code/discussions/424)