Docs: Modify the description of autoRotateSpeed.

docs/examples/en/controls/OrbitControls.html

@@ -87,7 +87,7 @@
 		<h3>[property:Float autoRotateSpeed]</h3>
 		<p>
 			How fast to rotate around the target if [page:.autoRotate] is true. Default is 2.0, which equates to 30 seconds
-			per rotation at 60fps.<br> Note that if [page:.autoRotate] is enabled, you must call [page:.update]
+			per round at 60fps.<br> Note that if [page:.autoRotate] is enabled, you must call [page:.update]
 			() in your animation loop.
 		</p>
 

docs/examples/zh/controls/OrbitControls.html

@@ -86,7 +86,7 @@
 
 		<h3>[property:Float autoRotateSpeed]</h3>
 		<p>
-			当[page:.autoRotate]为true时，围绕目标旋转的速度将有多快，默认值为2.0，相当于在60fps时每旋转一次需要30秒。<br>
+			当[page:.autoRotate]为true时，围绕目标旋转的速度将有多快，默认值为2.0，相当于在60fps时每旋转一周需要30秒。<br>
 			请注意，如果[page:.autoRotate]被启用，你必须在你的动画循环里调用[page:.update]()。
 		</p>