[gtk/matthiasc/for-master] docs: Update GtkSensitivityType docs

[Matthias Clasen <matthiasc src gnome org>]

commit 86d7ab7c50191201f498413676a5c71c7cf4b90a
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Nov 18 18:18:31 2020 -0500

    docs: Update GtkSensitivityType docs
    
    Don't talk about steppers here, since we are only using
    this type for combobox buttons nowadays.

 gtk/gtkenums.h | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/gtk/gtkenums.h b/gtk/gtkenums.h
index d3b6b3e6b2..761db8a538 100644
--- a/gtk/gtkenums.h
+++ b/gtk/gtkenums.h
@@ -196,13 +196,13 @@ typedef enum
 
 /**
  * GtkSensitivityType:
- * @GTK_SENSITIVITY_AUTO: The arrow is made insensitive if the
- *   thumb is at the end
- * @GTK_SENSITIVITY_ON: The arrow is always sensitive
- * @GTK_SENSITIVITY_OFF: The arrow is always insensitive
+ * @GTK_SENSITIVITY_AUTO: The control is made insensitive if no
+ *   action can be triggered
+ * @GTK_SENSITIVITY_ON: The control is always sensitive
+ * @GTK_SENSITIVITY_OFF: The control is always insensitive
  *
- * Determines how GTK handles the sensitivity of stepper arrows
- * at the end of range widgets.
+ * Determines how GTK handles the sensitivity of various controls,
+ * such as combo box buttons.
  */
 typedef enum
 {