README.md: link to freebsd maintainer.

Mic92 · web-flow · commit f119cd440135 · 2017-01-26T10:54:07.000+01:00
diff --git a/README.md b/README.md
@@ -779,7 +779,7 @@ Vicious written by:
 
 Maintainer of the Freebsd Port:
 
-- @mutlusun
+- [@mutlusun](https://github.com/mutlusun)
 
 Vicious major contributors:
 
