Motion actuation editorial jake (#712)

* Update motion-actuation.html

removed duplicate empty resource placeholder

* Update motion-actuation.html

slight editorial change to first bullet in examples

understanding/21/motion-actuation.html

@@ -32,7 +32,7 @@ <h3>Benefits</h3>
 			<h2>Examples of Success Criterion 2.6.1</h2>
 
 			<ul>
-				<li>After text is input in a field, shaking a device shows a dialog offering users to undo the input. A cancel button next to the text field offers the same functionality.</li>
+				<li>After text has been entered in an input field, shaking a device shows a dialog offering users to undo the input. A cancel button next to the text field offers the same functionality.</li>
   <li>A user can tilt a device to advance to the next or a previous page. Buttons or links are also provided to perform the same function.</li>
   <li>A user can move or pan a device to change the view in an interactive photo. A control is also available to perform these same functions.</li>
  <li>A user can gesture towards the device to navigate content. Controls are also available to navigate.</li>
@@ -41,17 +41,13 @@ <h2>Examples of Success Criterion 2.6.1</h2>
 		</section>
 
 		<section id="resources">
-			<h2>Resources</h2>
+			<h2>Related Resources</h2>
 			<ul>
         <li><a href="https://developer.mozilla.org/en-US/docs/Web/API/Detecting_device_orientation">Detecting device orientation</a></li>
         <li><a href="https://developer.mozilla.org/en-US/docs/Web/API/DeviceMotionEvent">DeviceMotionEvent</a></li>
 			</ul>
 		</section>
 
-		<section id="resources">
-			<h2>Related Resources</h2>
-			<p>(none currently documented)</p>
-		</section>
 		<section id="techniques">
 			<h2>Techniques</h2>
 			<section id="sufficient">