Correct THREE.Triangle /en and /zh docs

docs/api/en/math/Triangle.html

@@ -109,7 +109,7 @@
 
 		<h3>[method:Plane getPlane]( [param:Plane target] )</h3>
 		<p>
-		[page:Vector3 target] — the result will be copied into this Plane.<br /><br />
+		[page:Plane target] — the result will be copied into this Plane.<br /><br />
 
 		Calculate a [page:Plane plane] based on the triangle. .
 		</p>

docs/api/zh/math/Triangle.html

@@ -106,7 +106,7 @@
 
 		<h3>[method:Plane getPlane]( [param:Plane target] )</h3>
 		<p>
-		[page:Vector3 target] — 结果将会被拷贝到这一Plane中。<br /><br />
+		[page:Plane target] — 结果将会被拷贝到这一Plane中。<br /><br />
 
 		基于三角形计算出一个平面（[page:Plane plane]）。
 		</p>