Update ImageBitmapLoader.js

image-bitmap: looks better than imageBitmap: in this case

src/loaders/ImageBitmapLoader.js

@@ -102,7 +102,7 @@ class ImageBitmapLoader extends Loader {
 
 		const scope = this;
 
-		const cached = Cache.get( `imageBitmap:${url}` );
+		const cached = Cache.get( `image-bitmap:${url}` );
 
 		if ( cached !== undefined ) {