docs: Fix typo

docs/docs/guides/developer-guide/events/index.mdx

@@ -236,7 +236,7 @@ export class ProductReviewService {
 
 There is a special event class [`VendureEntityEvent`](/reference/typescript-api/events/vendure-entity-event) for events relating to the creation, update or deletion of entities. Let's say you have a custom entity (see [defining a database entity](/guides/developer-guide/database-entity//)) `BlogPost` and you want to trigger an event whenever a new `BlogPost` is created, updated or deleted:
 
-```ts title="src/plugins/blog/events/blog-post-event.ts
+```ts title="src/plugins/blog/events/blog-post-event.ts"
 import { ID, RequestContext, VendureEntityEvent } from '@vendure/core';
 import { BlogPost } from '../entities/blog-post.entity';
 import { CreateBlogPostInput, UpdateBlogPostInput } from '../types';