docs: add documentation for window.button.height

diff --git a/docs/labwc-theme.5.scd b/docs/labwc-theme.5.scd
index 7ecabe7adfb92a828fb92d20f88d7ccb3a87d8e7..5bf315d361becc8f1fb5cb732b924d0b86bb7809 100644 (file)
--- a/docs/labwc-theme.5.scd
+++ b/docs/labwc-theme.5.scd
@@ -122,6 +122,10 @@ labwc-config(5).
        Width of a titlebar button, in pixels.
        Default is 26.
 
+*window.button.height*
+       Height of a titlebar button, in pixels.
+       Default is 26.
+
 *window.button.spacing*
        Space between titlebar buttons, in pixels.
        Default is 0.