corrected template url (#2)

Author: askeron

.github/template-cleanup/README.md

@@ -22,4 +22,4 @@ If you stuck with Kotlin-specific questions or anything related to this template
 [issues]: https://github.com/kotlin-hands-on/advent-of-code-kotlin-template/issues
 [kotlin]: https://kotlinlang.org
 [slack]: https://surveys.jetbrains.com/s3/kotlin-slack-sign-up
-[template]: https://github.com/kotlinhandson/advent-of-code-kotlin-template
+[template]: https://github.com/kotlin-hands-on/advent-of-code-kotlin-template