Tweak: add RPI to description of RPI

Author: jake-billings

README.md

@@ -5,7 +5,7 @@ This repository contains the style guide for coding&&community. It should contai
 
 Visit [https://codingandcommunity.org](https://codingandcommunity.org) for more information about our organization.
 
-We are a [Rensselaer Polytechnic Institute](https://www.rpi.edu/) [Student Union](https://union.rpi.edu/) Club.
+We are a [Rensselaer Polytechnic Institute (RPI)](https://www.rpi.edu/) [Student Union](https://union.rpi.edu/) Club.
 
 # What is a style guide? #