Update Select documentation

Author: darrenburns

docs/widgets/select.md

@@ -88,10 +88,13 @@ The following example presents a `Select` created using the `from_values` class
 
 ## Blank state
 
-The widget `Select` has an option `allow_blank` for its constructor.
+The `Select` widget has an option `allow_blank` for its constructor.
 If set to `True`, the widget may be in a state where there is no selection, in which case its value will be the special constant [`Select.BLANK`][textual.widgets.Select.BLANK].
 The auxiliary methods [`Select.is_blank`][textual.widgets.Select.is_blank] and [`Select.clear`][textual.widgets.Select.clear] provide a convenient way to check if the widget is in this state and to set this state, respectively.
 
+## Type to search
+
+The `Select` widget has a `type_to_search` attribute which allows you to type to move the cursor to a matching option when the widget is expanded. To disable this behavior, set the attribute to `False`.
 
 ## Reactive Attributes