Corrected problem descriptions in about page

Author: ErwinZhou

_config.yml

@@ -25,8 +25,8 @@ author:
   name             : "Yuchen Zhou"
   pronouns         : "he/him"  
   bio              : "My story, one of a kind"
-  location         : "Pittsburgh, Pennsylvania, United States"
-  employer         : "Carnegie Mellon University University"
+  location         : "Pittsburgh, Pennsylvania, US"
+  employer         : "Carnegie Mellon University"
   uri              : "https://www.linkedin.com/in/yuchen-zhou-325513317/" # Used for author profile link
   email            : "yuchenz8@andrew.cmu.edu"