Update README.md

Updated line 20 to improve sentence flow.

Author: AustinNCC

README.md

@@ -17,7 +17,7 @@ See more info at https://academicpages.github.io/
 
 ## Running locally
 
-When you are initially working your website, it is very useful to be able to preview the changes locally before pushing them to GitHub. To work locally you will need to:
+When you are initially working on your website, it is very useful to be able to preview the changes locally before pushing them to GitHub. To work locally you will need to:
 
 1. Clone the repository and made updates as detailed above.
 1. Make sure you have ruby-dev, bundler, and nodejs installed