doc: fix inconsistent wording

Fixup for 34290ef6

diff --git a/docs/labwc-theme.5.scd b/docs/labwc-theme.5.scd
index 7611d4794beec75013119bcf0d6e4be7d594dcba..725995232e71636ec3e2e395e190b6d757aa273f 100644 (file)
--- a/docs/labwc-theme.5.scd
+++ b/docs/labwc-theme.5.scd
@@ -259,7 +259,7 @@ elements are not listed here, but are supported.
        is snapped to a region. Inherits `osd.border.width` if not set.
 
 *snapping.overlay.edge.border.width*
-       Border width of an outlined rectangle shown as the preview when a window
+       Border width of an outlined rectangle shown as an overlay when a window
        is snapped to an edge. Inherits `osd.border.width` if not set.
 
 *snapping.overlay.region.border.color*