use my @d.o email address

Signed-off-by: Mattia Rizzolo <mattia@debian.org>

README

@@ -18,7 +18,7 @@ The (virtualized) hardware is sponsored since October 2012 by http://www.profitb
 
 Some stats are available using link:https://jenkins.debian.net/munin/jenkins-month.html[munin-plugins for jenkins].
 
-Three persons have shell access (incl. root) to the machine: link:mailto:holger@layer-acht.org[Holger Levsen], link:mailto:helmutg@debian.org[Helmut Grohne] and link:mailto:mattia@mapreri.org[Mattia Rizzolo]. All of them have also access to the web intereface, where tasks like stopping and scheduling job runs can be done, also they have the rights to edit the jenkins scripts (i.e. what jenkins executes) directly, though this is limited to cases like firefighting (IOW deploying changes via the git repository are the norm). The deploying of changes is still limited to people with root powers.
+Three persons have shell access (incl. root) to the machine: link:mailto:holger@layer-acht.org[Holger Levsen], link:mailto:helmutg@debian.org[Helmut Grohne] and link:mailto:mattia@debian.org[Mattia Rizzolo]. All of them have also access to the web intereface, where tasks like stopping and scheduling job runs can be done, also they have the rights to edit the jenkins scripts (i.e. what jenkins executes) directly, though this is limited to cases like firefighting (IOW deploying changes via the git repository are the norm). The deploying of changes is still limited to people with root powers.
 
 == Getting involved