CHange from developers to developer

src/main.c

@@ -28,15 +28,12 @@ about_activated (G_GNUC_UNUSED GSimpleAction *simple,
     GtkApplication *app = GTK_APPLICATION (user_data);
     GtkWindow *window = gtk_application_get_active_window (app);
 
-    const char *authors[] = { "Bruce Cowan", NULL };
-
-
     adw_show_about_window (window,
                            "application-icon", "face-wink",
                            "application-name", "Rugby",
                            "copyright", "Copyright 2012–2022 Bruce Cowan",
                            "license-type", GTK_LICENSE_GPL_3_0,
-                           "developers", authors,
+                           "developer-name", "Bruce Cowan",
                            "comments", "Rugby scores possibilities program",
                            "version", VERSION,
                            NULL);