[mediaqueries] Remove mention of 'tv' media type from the 'scan' example.

Author: tabatkins

mediaqueries/Overview.html

@@ -1417,9 +1417,9 @@ <h3 class="heading settled heading" data-level=5.2 id=scan><span class=secno>5.2
 
 	<div class=example>
 		For example, this media query expresses that a style sheet is
-		usable on tv devices with progressive scanning:
+		usable on devices with progressive scanning:
 
-<pre>@media tv and (scan: progressive) { … }</pre>	</div>
+<pre>@media (scan: progressive) { … }</pre>	</div>
 
 <h3 class="heading settled heading" data-level=5.3 id=grid><span class=secno>5.3 </span><span class=content>
 grid</span><a class=self-link href=#grid></a></h3>

mediaqueries/Overview.src.html

@@ -1029,9 +1029,9 @@ <h3 id="scan">
 
 	<div class="example">
 		For example, this media query expresses that a style sheet is
-		usable on tv devices with progressive scanning:
+		usable on devices with progressive scanning:
 
-		<pre>@media tv and (scan: progressive) { … }</pre>
+		<pre>@media (scan: progressive) { … }</pre>
 	</div>
 
 <h3 id="grid">