Use personal email address

Signed-off-by: Arnaud Porterie (icecrime) <arnaud.porterie@docker.com>

MAINTAINERS

@@ -312,7 +312,7 @@
 
 	[people.icecrime]
 	Name = "Arnaud Porterie"
-	Email = "arnaud@docker.com"
+	Email = "icecrime@gmail.com"
 	GitHub = "icecrime"
 
 	[people.jamtur01]