Fix broken links

4-typing-game/README.md

@@ -23,7 +23,7 @@ This lesson assumes you're familiar with the following concepts:
 
 ## Lesson
 
-[Creating a typing game by using event driven programming](./project/README.md)
+[Creating a typing game by using event driven programming](./typing-game/README.md)
 
 ## Credits
 

4-typing-game/typing-game/README.md

@@ -2,7 +2,7 @@
 
 ## Pre-Lecture Quiz
 
-[Pre-lecture quiz](.github/pre-lecture-quiz.md)
+[Pre-lecture quiz](../.github/pre-lecture-quiz.md)
 
 ## Event driven programming
 
@@ -326,7 +326,7 @@ Add more functionality
 
 ## Post-Lecture Quiz
 
-[Post-lecture quiz](.github/post-lecture-quiz.md)
+[Post-lecture quiz](../.github/post-lecture-quiz.md)
 
 ## Review & Self Study