added <h2>Constructor</h2>

docs/api/en/materials/PointsMaterial.html

@@ -55,7 +55,8 @@
 			[example:webgl_trails WebGL / trails]
 		</p>
 
-		<h2>[name]( [param:Object parameters] )</h2>
+		<h2>Constructor</h2>
+		<h3>[name]( [param:Object parameters] )</h3>
 		<p>
 			[page:Object parameters] - (optional) an object with one or more properties defining the material's appearance.
 			Any property of the material (including any property inherited from [page:Material]) can be passed in here.<br /><br />