CREDITS: Update Robert Edmonds entry. [skip ci]

Same as in libpcap.

Author: infrastation

CREDITS

@@ -295,7 +295,7 @@ Additional people who have contributed patches (in alphabetical order):
     Rick Watson                   <watsonrick at users dot sourceforge dot net>
     Ritesh Ranjan                 <r dot ranjan789 at gmail dot com>
     Rob Braun                     <bbraun at synack dot net>
-    Robert Edmonds                <stu-42 at sourceforge dot net>
+    Robert Edmonds                <edmonds at debian dot org>
     Rocco Lucia                   <rlucia at iscanet dot com>
     Roderick Schertler            <roderick at argon dot org>
     Romain Francoise              <rfrancoise at debian dot org>