notebook: Update CSS node docs

The stack node is new.
This commit is contained in:
Matthias Clasen 2016-01-11 13:55:23 -05:00
parent 3a8dc01ed2
commit 990be25d63

View File

@ -115,6 +115,7 @@
* [arrow]
* [<action widget>]
*
* stack
* <child>
*
* <child>