docs/change-exploringjs-link

Change the link to go directly to the starting chapter

Author: marcorichetta

javascript1/week1/preparation.md

@@ -1,7 +1,7 @@
 ![Reading](https://media.giphy.com/media/l0MYtRl33WaN4HGBq/giphy.gif)
 
 # Preparation
-- [ ] [Read this](https://exploringjs.com/es5/toc.html) up to and including the *Strings* chapter (it’s okay if you don’t understand all of it yet, we will cover these concepts in class as well. Do make sure to write or document the questions you have so we can discuss them in class) (15 min)
+- [ ] [Read this](https://exploringjs.com/es5/ch01.html) up to and including the *Strings* chapter (it’s okay if you don’t understand all of it yet, we will cover these concepts in class as well. Do make sure to write or document the questions you have so we can discuss them in class) (15 min)
 
 - [ ] [JavaScript Introduction at MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Introduction) (10 min)