Update README.md

Mia Steinkirch · web-flow · commit 6680aa64143d · 2018-06-14T15:51:07.000-07:00
diff --git a/README.md b/README.md
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 ##   ✨ Algorithms & Data Structures in Python (Book, Hanbit Media, Inc.)  ✨ 
 
-#### 📚[Download the digital book here.](https://github.com/bt3gl/Python-and-Algorithms-and-Data-Structures/blob/master/book/book_second_edition.pdf)
+#### 📚[Download the digital book here.](https://github.com/bt3gl/Python-and-Algorithms-and-Data-Structures/blob/master/ebook/book_second_edition.pdf)
 
 
 ##  ✨ Installation:
