fixed typo; updated intro

github-clinic/julie.md

@@ -1,12 +1,12 @@
 # GitHub practice from the browser
 
-Working on GitHub.com, we contribute changes through **commits**. You'll practice creating several commits by making small edits to a file, writing commit messages, and committing changes to see them posted nicely online to communicate our work. You'll practice with the file with your name on it; everyone has their own file to practice with. 
+Update text!
 
 ## Task 1: Commit an edit from the browser
 
 Let's edit this file by clicking the pencil icon at the top-right of the file. 
 
-Next, make an edit to the text in this file. One idea is to fix this tpyo. 
+Next, make an edit to the text in this file. One idea is to fix this typo. 
 
 Finally, we will commit these edits to GitHub. To do this, press the green "Commit Changes..." button. Committing changes has two steps: write a human-readable Commit message, and press the green button to commit changes.