Update _config.yml

Author: fangli333

_config.yml

@@ -24,7 +24,7 @@ author:
   avatar           : "FL.png"
   name             : "Fang Li 李放"
   pronouns         : # example: "she/her"  
-  bio              : "Ph.D. student @ ECE @ UIUC"
+  bio              : "Ph.D. candidate @ ECE @ UIUC"
   location         : "Urbana, IL"
   uri              : # URL
   email            : "fangli3@illinois.edu"