docs(common): Minor typo in code example (angular#58085)

PR Close angular#58085

Author: PowerKiKi

packages/common/src/directives/ng_optimized_image/ng_optimized_image.ts

@@ -258,7 +258,7 @@ export interface ImagePlaceholderConfig {
  *   {
  *      provide: IMAGE_LOADER,
  *      useValue: (config: ImageLoaderConfig) => {
- *        return `https://example.com/${config.src}-${config.width}.jpg}`;
+ *        return `https://example.com/${config.src}-${config.width}.jpg`;
  *      }
  *   },
  * ],