Minor tweak: remove unnecessay "about"

Author: patrickhlauke

mediaqueries/Overview.bs

@@ -1607,7 +1607,7 @@ Pointing Device Quality: the 'pointer' feature</h3>
 	Type: discrete
 	</pre>
 
-	The 'pointer' media feature is used to query about the presence and accuracy of a pointing device such as a mouse.
+	The 'pointer' media feature is used to query the presence and accuracy of a pointing device such as a mouse.
 	If a device has multiple input mechanisms,
 	the 'pointer' media feature must reflect the characteristics of the “primary” input mechanism,
 	as determined by the user agent.