Update API break docs

nyalldawson · nyalldawson · commit 961b63f292de · 2016-11-02T11:07:07.000+10:00
diff --git a/doc/api_break.dox b/doc/api_break.dox
@@ -736,10 +736,9 @@ QgsEditFormConfig        {#qgis_api_break_3_0_QgsEditFormConfig}
 - widgetType() and widgetConfig() now reflect only the user configured values.
 QgsEditorWidgetRegistry::instance()->findBest() must be used instead.
 - widgetType(), widgetConfig(), setWidgetType(), setWidgetConfig() and removeWidgetConfig() now only take a string as first parameter. Access by index has been removed.
-- expression() has been renamed to constraintExpression()
-- setExpression() has been renamed to setConstraintExpression()
-- expressionDescription() has been renamed to constraintDescription()
-- setExpressionDesctiption() has been renamed to setConstraintDescription()
+- expression(), setExpression(), expressionDescription() and setExpressionDescription() 
+have been removed. Use QgsVectorLayer.setConstraintExpression()/constraintExpression(),
+or QgsField.constraintExpression()/QgsField.constraintDescription() instead.
 - notNull() and setNotNull() have been removed. Use QgsVectorLayer.setFieldConstraints()/fieldConstraints(), or QgsField.constraints() instead.
 
 QgsExpression        {#qgis_api_break_3_0_QgsExpression}
