lesson 21 grammar

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

@@ -843,7 +843,7 @@ Example:
 Notes:
 
 - When <span class="md spoiler">telling time,</span> “시” is put after the hour. For example: 5시 = 5:00
-- When <span class="md spoiler">talking about “hours,”</span> the word “시간” is used. See [Lesson 11](https://www.howtostudykorean.com/unit1/unit-1-lessons-9-16/lesson-11/) for more information.
+- When <span class="md spoiler">talking about “hours,”</span> the word “시간” is used. See [Lesson 11](./11-time.md) for more information.
 
 Example:
 
@@ -859,7 +859,7 @@ Example:
 
 Notes:
 
-When telling time, “분” is put after the minute. It also means “minute” in regular situations. See [Lesson 11](https://www.howtostudykorean.com/unit1/unit-1-lessons-9-16/lesson-11/) for more information.
+When telling time, “분” is put after the minute. It also means “minute” in regular situations. See [Lesson 11](./11-time.md) for more information.
 
 Example:
 
@@ -1063,7 +1063,7 @@ When writing out the word instead of using the numeral (for example, writing “
 
 When the Korean numbers are used (i.e. when counting things or actions), the word is more typically used than the numeral. In our lessons, you will usually see the Korean word written out when a counter is used.
 
-In other situations where Sino-Korean numbers are used, there is no difference if you use the Sino-Korean numeral or the word. I will come back to this in the [next lesson](https://www.howtostudykorean.com/unit1/unit-1-lessons-9-16/lesson-11/) when you learn applications for Sino-Korean numbers.
+In other situations where Sino-Korean numbers are used, there is no difference if you use the Sino-Korean numeral or the word. I will come back to this in the [next lesson](./11-time.md) when you learn applications for Sino-Korean numbers.
 
 These nouns that we have counted can now become the object of a sentence:
 
@@ -1140,7 +1140,7 @@ This is fairly simple to use, but you will continue to learn about this word in
 
 <VocabQuiz fm-key="sentence" category="time" />
 
-There are so many different ways to talk about time (seconds, minutes, hours, days, weeks, months, years, etc…). You will learn more about how to indicate when you did/do/will do something using these ‘time’ words in the [next lesson](https://www.howtostudykorean.com/unit1/unit-1-lessons-9-16/lesson-11/). In this lesson, however, you will learn about telling time, as in the time on a clock.
+There are so many different ways to talk about time (seconds, minutes, hours, days, weeks, months, years, etc…). You will learn more about how to indicate when you did/do/will do something using these ‘time’ words in the [next lesson](./11-time.md). In this lesson, however, you will learn about telling time, as in the time on a clock.
 
 When talking about the hour, as in ‘2 o’clock’ all you need to do is put <TTS>시</TTS> after a number: