finish expunging UW

Author: ransford

404.md

@@ -6,7 +6,7 @@ Sorry! The server can't find that page.
 
 Please consider trying to find what you need from [the home page][home].
 
-If you think something might be broken, please send an email to [Adrian][].
+If you think something might be broken, please send an email to [webmaster][].
 
 [home]: {{ site.base }}/
-[adrian]: https://homes.cs.washington.edu/~asampson/
+[webmaster]: mailto:[email protected].edu