lesson 26 nouns, and inter-lesson links

docs/howtostudykorean/unit-1/10-numbers.md

@@ -1188,7 +1188,7 @@ _It is also possible to put the number-counter combination before the noun that
 - 다섯 개의 펜 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2017/03/Lesson10-6.mp3" /> = <span class="md spoiler">5 pens</span>
 - 마흔네 개의 펜 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2017/03/Lesson10-8.mp3" /> = <span class="md spoiler">44 pens</span>
 
-*The purpose and function of ~*의 *in this type of construction is discussed in [Lesson 23](https://www.howtostudykorean.com/unit1/unit-1-lessons-17-25-2/lesson-23/). As I said, it is usually less common to count using this method, so for now, don’t worry about this grammar. I simply want you to know that it can be done. Pay more attention to the “*사람 두 명*” form instead of the “*두 명의 사람*” form.*
+*The purpose and function of ~*의 *in this type of construction is discussed in [Lesson 23](./23-ㅎ-irregulars-colors.md). As I said, it is usually less common to count using this method, so for now, don’t worry about this grammar. I simply want you to know that it can be done. Pay more attention to the “*사람 두 명*” form instead of the “*두 명의 사람*” form.*
 
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