Update readme to add one repository again.

README.md

@@ -2,7 +2,7 @@
 
 Introduction to Java Programming and Data Structures, Comprehensive 11E, Y. Daniel Liang [Book](https://media.pearsoncmg.com/bc/abp/cs-resources/products/product.html#product,isbn=0134611039)  
 [Examples online](https://media.pearsoncmg.com/ph/esm/ecs_liang_ijp_11/cw-brief/content/source-code.php)  
-[Checkpoints](https://liveexample.pearsoncmg.com/checkpoint/Chapter1.html) (Chapter 1 default, address can be edited)
+[Checkpoints](https://liveexample.pearsoncmg.com/checkpoint/Chapter1.html) (Chapter 1 default, address can be edited)  
 [Exercises](https://github.com/jsquared21/Intro-to-Java-Programming) (Exercises at the end of each chapter)
 
 ## Codes