[mediaqueries-4] Fix broken grammar / stray sentence fragment

Author: frivoal

mediaqueries-4/Overview.bs

@@ -369,7 +369,7 @@ Media Types</h3>
 		<dd>Matches all devices that aren't matched by ''print'' or ''speech''.
 
 		<dt><dfn>speech</dfn>
-		<dd>Matches devices that similar devices that “read out” a page.
+		<dd>Matches devices that “read out” a page.
 		<div class=note>Screen readers that produce a speech rendering based
 		on the the visual layout of the page are expected to match ''screen'' instead.
 		This media type is for user agents that produce