fix LLM explainer for sentence: section + example sentences

docs/howtostudykorean/unit-1/24-before-after-since-within.md

@@ -1265,7 +1265,7 @@ If 안/이내 are placed after an indication of time, they have the meaning of
 
 This was a bit of an easy lesson as well! This lesson and the one before it were pretty easy – but don’t worry – you are almost at Unit 2, and the lessons in that unit will be really hard!
 
-[Okay, I got it! Take me to the next lesson!](./25-anybody.md) Or,
+[Okay, I got it! Take me to the next lesson!](./25-anybody-everybody.md) Or,
 [Click here for a workbook to go along with this lesson.](https://www.howtostudykorean.com/workbooks/#Unit1725 "Workbooks")
 
 ## Summary