small cosmetic correction

views/DE/account/security.pug

@@ -20,7 +20,7 @@ html(lang="de")
                         ul(class="flex-md-column flex-row navbar-nav w-100 justify-content-between")
                             li(class="nav-item")
                                 a(class="nav-link pl-0 text-nowrap" href="/account/")
-                                    span(class="font-weight-bold color_black") #{user.firstname} #{user.lastname}
+                                    span(class="font-weight-bold color_black") #{user.firstName} #{user.lastName}
                             li(class="nav-item")
                                 a(class="nav-link pl-0" href="/account/profile")
                                     i(class="fa fa-user fa-fw")