Docs: Improve Lensflare page (#27008)

docs/examples/en/objects/Lensflare.html

@@ -23,7 +23,7 @@
 		</p>
 
 		<code>
-			import { Lensflare } from 'three/addons/objects/Lensflare.js';
+			import { Lensflare, LensflareElement } from 'three/addons/objects/Lensflare.js';
 		</code>
 
 		<h2>Code Example</h2>