[mediaqueries-4] Fix typo (deprecated features)

Author: sideshowbarker

mediaqueries-4/Overview.bs

@@ -2074,7 +2074,7 @@ Assorted Issues</h2>
 Appendix A: Deprecated Media Features</h2>
 
 	<p>The following <a>media features</a> are <strong>deprecated</strong>. They
-	kept for backward compatibility, but are not appropriate for newly
+	are kept for backward compatibility, but are not appropriate for newly
 	written style sheets. Authors must not use them. User agents must support them
 	as specified.