[gtk/prop-list] expression: Small documentation fixes

[Matthias Clasen <matthiasc src gnome org>]

commit 22ca0f57dc613cf44c3e73688a986ade8b8a84eb
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Dec 18 19:45:09 2019 -0500

    expression: Small documentation fixes

 gtk/gtkexpression.c | 2 +-
 gtk/gtkexpression.h | 7 +++++++
 2 files changed, 8 insertions(+), 1 deletion(-)
---
diff --git a/gtk/gtkexpression.c b/gtk/gtkexpression.c
index 02a8d4779a..6500cc546f 100644
--- a/gtk/gtkexpression.c
+++ b/gtk/gtkexpression.c
@@ -51,7 +51,7 @@
  * Watches can be created for automatically updating the propery of an object,
  * similar to GObject's #GBinding mechanism, by using gtk_expression_bind().
  *
- * #GtkExpression in ui files
+ * GtkExpression in ui files
  *
  * GtkBuilder has support for creating expressions. The syntax here can be used where
  * a #GtkExpression object is needed like in a <property> tag for an expression
diff --git a/gtk/gtkexpression.h b/gtk/gtkexpression.h
index 6b642a30fe..ddffee6706 100644
--- a/gtk/gtkexpression.h
+++ b/gtk/gtkexpression.h
@@ -28,6 +28,13 @@ G_BEGIN_DECLS
 typedef struct _GtkExpression GtkExpression;
 typedef struct _GtkExpressionWatch GtkExpressionWatch;
 
+/**
+ * GtkExpressionNotify:
+ * @user_data: data passed to gtk_expression_watch()
+ *
+ * Callback called by gtk_expression_watch() when the
+ * expression value changes.
+ */
 typedef void            (* GtkExpressionNotify)                 (gpointer                        user_data);
 
 #define GTK_IS_EXPRESSION(expr) ((expr) != NULL)