chore: update version number in readme

Author: janoskocs

README.md

@@ -4,7 +4,7 @@ Project Link: [https://janoskocs.com/](https://janoskocs.com/)
 
 Checkout the source code for my portfolio site!
 My first computer had Windows 98 on it and I thought it was the coolest thing EVER. As I am going through a career change, I wanted to pay homage to Win98 as it really inspired me to build software.
-This is version 3; I completely rebuilt it from the ground up using React and Sass.
+This is version 3.1; I completely rebuilt it from the ground up using React and Sass.
 
 ![Portfolio screenshot](https://janoskocs.com/images/screenshot1.png)