Docs: Clean up. (#21491)

docs/examples/en/helpers/RectAreaLightHelper.html

@@ -53,10 +53,6 @@
 		<h3>[method:null dispose]()</h3>
 		<p>Dispose of the rectAreaLightHelper.</p>
 
-		<h3>[method:null update]()</h3>
-		<p>Updates the helper to match the position and direction of the [page:.light].</p>
-
-
 		<h2>Source</h2>
 
 		<p>

docs/examples/zh/helpers/RectAreaLightHelper.html

@@ -53,10 +53,6 @@
 		<h3>[method:null dispose]()</h3>
 		<p>销毁该区域光源辅助对象.</p>
 
-		<h3>[method:null update]()</h3>
-		<p>更新辅助对象，与 [page:.light] 属性的位置和方向保持一致.</p>
-
-
 		<h2>源码</h2>
 
 		<p>