lesson 21 grammar

docs/howtostudykorean/unit-1/06-honorifics.md

@@ -1310,7 +1310,7 @@ Notes:
 
 To say that one was sitting while doing something, you should attach “~아/어서” to 앉다. For example:
 
-- <TTS>저는 앉아서 먹었어요</TTS> = <span class="md spoiler">I sat down and ate.</span> The grammar for this is introduced in [Lesson 17](https://www.howtostudykorean.com/unit1/unit-1-lessons-17-25-2/lesson-17/).
+- <TTS>저는 앉아서 먹었어요</TTS> = <span class="md spoiler">I sat down and ate.</span> The grammar for this is introduced in [Lesson 17](./17-connecting-want.md).
 
 Example:
 
@@ -1449,7 +1449,7 @@ Example:
 
 <Details>
 
-- 듣다 follows the ㄷ irregular. See [Lesson 7](https://www.howtostudykorean.com/unit1/unit-1-lessons-1-8/unit-1-lesson-7/) for more information.
+- 듣다 follows the ㄷ irregular. See [Lesson 7](./07-irregulars.md) for more information.
 
 Common Usages:
 
@@ -1531,7 +1531,7 @@ Example:
 
 <Details>
 
-빠르다 follows the 르 irregular. See [Lesson 7](https://www.howtostudykorean.com/unit1/unit-1-lessons-1-8/unit-1-lesson-7/) for more information.
+빠르다 follows the 르 irregular. See [Lesson 7](./07-irregulars.md) for more information.
 
 Notes: