Update 002.md

book/exercises/002.md

@@ -2,7 +2,7 @@
 
 Let's continue by adding one additional step. Let's add a file to the table of contents! the `_toc.yml` contains a list of all the files to be shown in your book-website. Let's add a file which is not in the table of contents yet!
 
-Add the file named `file_to_be_added_to_toc.md` and add it successfully to the book?
+Add the file named `file_to_be_added_to_toc.md` to the book?
 
 1. Go to the (`https://github.com/<your_username>/<your_repo_name>`) - {octicon}`code;1em` `Code` - `Book` directory of your GitHub repository and find the location of `file_to_be_added_to_toc.md`
 2. Go to the the file `book/_toc.yml` on your GitHub repository (`https://github.com/<your_username>/<your_repo_name>`) - {octicon}`code;1em` `Code` - `Book` - `_toc.yml` - {octicon}`pencil;1em` `Edit this file`