fixed typo in edit mail form

web/templates/admin/edit_mail_acc.html

@@ -44,7 +44,7 @@
                                     var rnum = Math.floor(Math.random() * chars.length);
                                     randomstring += chars.substring(rnum,rnum+1);
                                 }
-                                document.v-add-user.v_password.value = randomstring;
+                                document.v_edit_mail_acc.v_password.value = randomstring;
                             }
                         </script>