format the blueprint file using `blueprint-compiler format`

src/apprt/gtk/ui/prompt-title-dialog.blp

@@ -4,10 +4,12 @@ using Adw 1;
 Adw.AlertDialog prompt_title_dialog {
   heading: _("Change Terminal Title");
   body: _("Leave blank to restore the default title.");
+
   responses [
     cancel: _("Cancel"),
     ok: _("OK") suggested
   ]
+
   focus-widget: title_entry;
 
   extra-child: Entry title_entry {};