fixed scenegraph example typo (#31289)

Author: MeirArani

manual/en/scenegraph.html

@@ -91,7 +91,7 @@ <h1>Scene Graph</h1>
 represents light that emanates from a single point.</p>
 <pre class="prettyprint showlinemods notranslate lang-js" translate="no">{
   const color = 0xFFFFFF;
-  const intensity = 3;
+  const intensity = 500;
   const light = new THREE.PointLight(color, intensity);
   scene.add(light);
 }

manual/examples/scenegraph-sun-earth-moon-axes-grids.html

@@ -79,7 +79,7 @@
 	{
 
 		const color = 0xFFFFFF;
-		const intensity = 3;
+		const intensity = 500;
 		const light = new THREE.PointLight( color, intensity );
 		scene.add( light );
 

manual/fr/scenegraph.html

@@ -89,7 +89,7 @@ <h1>Graphe de scène</h1>
 représente la lumière qui émane d'un point unique.</p>
 <pre class="prettyprint showlinemods notranslate lang-js" translate="no">{
   const color = 0xFFFFFF;
-  const intensity = 3;
+  const intensity = 500;
   const light = new THREE.PointLight(color, intensity);
   scene.add(light);
 }

manual/ja/scenegraph.html

@@ -80,7 +80,7 @@ <h1>のシーングラフ</h1>
 一点から発せられる明かりというのが、とりあえずの簡単な説明です。</p>
 <pre class="prettyprint showlinemods notranslate lang-js" translate="no">{
   const color = 0xFFFFFF;
-  const intensity = 3;
+  const intensity = 500;
   const light = new THREE.PointLight(color, intensity);
   scene.add(light);
 }

manual/ko/scenegraph.html

@@ -89,7 +89,7 @@ <h1>씬 그래프(Scene graph)</h1>
 정도로 알아둡시다.</p>
 <pre class="prettyprint showlinemods notranslate lang-js" translate="no">{
   const color = 0xFFFFFF;
-  const intensity = 3;
+  const intensity = 500;
   const light = new THREE.PointLight(color, intensity);
   scene.add(light);
 }

manual/ru/scenegraph.html

@@ -89,7 +89,7 @@ <h1>Граф сцены </h1>
 представляет собой точечный источник света.</p>
 <pre class="prettyprint showlinemods notranslate lang-js" translate="no">{
   const color = 0xFFFFFF;
-  const intensity = 3;
+  const intensity = 500;
   const light = new THREE.PointLight(color, intensity);
   scene.add(light);
 }

manual/zh/scenegraph.html

@@ -66,7 +66,7 @@ <h1>场景图</h1>
 <p>我们也在场景的中心放置了一个点光源（point light）。稍后我们会介绍更多关于点光源的细节，但现在简单地说，点光源代表从一个点向各个方向发射的光源。</p>
 <pre class="prettyprint showlinemods notranslate lang-js" translate="no">{
   const color = 0xffffff;
-  const intensity = 3;
+  const intensity = 500;
   const light = new THREE.PointLight(color, intensity);
   scene.add(light);
 }