[css-overflow-4] Markup fix

Author: frivoal

css-overflow-4/Overview.bs

@@ -902,7 +902,7 @@ Indicating Block-Axis Overflow: the 'block-ellipsis' property</h3>
 
 		For bidi purposes, the [=block overflow ellipsis=] must be treated
 		as an anonymous inline with ''unicode-bidi: isolate'',
-		with the same [=embedding level=] as the [=bidi paragraph=],
+		with the same embedding level as the [=bidi paragraph=],
 		and which inherits ''direction'' from the [=bidi paragraph=].
 
 		<wpt>