Update webgpu_postprocessing_ssr.html

Clean up.

examples/webgpu_postprocessing_ssr.html

@@ -20,7 +20,7 @@
 		{
 			"imports": {
 				"three": "../build/three.webgpu.js",
-					"three/webgpu": "../build/three.webgpu.js",
+				"three/webgpu": "../build/three.webgpu.js",
 				"three/tsl": "../build/three.tsl.js",
 				"three/addons/": "./jsm/"
 			}