docs: Mention for what GtkStringObject:string is useful

diff --git a/gtk/gtkstringlist.c b/gtk/gtkstringlist.c
index 55aa584b34fb09163261aa881df3048d4ef0f9b5..01b5de815eebcc8c9bdce38edbc87e52b2bf2ce7 100644 (file)
--- a/gtk/gtkstringlist.c
+++ b/gtk/gtkstringlist.c
@@ -65,7 +65,8 @@
  * `GtkStringObject` is the type of items in a `GtkStringList`.
  *
  * A `GtkStringObject` is a wrapper around a `const char*`; it has
- * a [property@Gtk.StringObject:string] property.
+ * a [property@Gtk.StringObject:string] property that can be used
+ * for property bindings and expressions.
  */
 
 #define GDK_ARRAY_ELEMENT_TYPE GtkStringObject *