Update Quaternion.html

Quaternion.lengthSq() desciption in Chinese

docs/api/zh/math/Quaternion.html

@@ -109,7 +109,7 @@
 
 		<h3>[method:Float lengthSq]()</h3>
 		<p>
-			Computes the [link:https://en.wikipedia.org/wiki/Euclidean_distance Euclidean length]
+			Computes the squared [link:https://en.wikipedia.org/wiki/Euclidean_distance Euclidean length]
 			(straight-line length) of this quaternion, considered as a 4 dimensional
 			vector. This can be useful if you are comparing the lengths of two quaternions,
 			as this is a slightly more efficient calculation than [page:.length length]().