about: fixed small typo

Author: ariadnavigo

content/about/index.md

@@ -22,4 +22,4 @@ These are the ways you can find me on the internet:
 
 1. **Email:** [[email protected]](mailto:[email protected]) 
    (You may find my OpenPGP key via WKD) 
-2. **Github:** [@ariadnavigo](https://github.com/ariadnavigo)
+2. **GitHub:** [@ariadnavigo](https://github.com/ariadnavigo)