DEVELOPERS: fix email of Dario Binacchi

Fix email typo added by commit 776385d645b37cfc43479b37e106244aa9ab2e85

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

DEVELOPERS

@@ -656,7 +656,7 @@ F:	package/lua-cjson/
 F:	package/luaexpat/
 F:	package/xinetd/
 
-N:	Dario Binacchi <dario.binacchi@amarula.solutions.com>
+N:	Dario Binacchi <dario.binacchi@amarulasolutions.com>
 F:	package/uuu/
 
 N:	Dario Binacchi <dariobin@libero.it>