[css-position-4][editorial] tweak wording

Author: tabatkins

css-position-4/Overview.bs

@@ -279,9 +279,9 @@ with its top left corner at the canvas origin.
 		into |canvas|.
 
 	Note: Even though the visual order of inline box fragments
-	can be rearranged due to
-	[[css-writing-modes-3#bidi-box-model|bidirectional reordering]],
-	the fragments are still painted in tree order.
+	can be rearranged within a line
+	due to [[css-writing-modes-3#bidi-box-model|bidirectional reordering]],
+	the fragments are nevertheless painted in tree order.
 </div>
 
 <div algorithm>