Update abp-9-0.md

docs/en/release-info/migration-guides/abp-9-0.md

@@ -84,7 +84,8 @@ public class BookWithNavigationPropertiesDto
 
     public AuthorDto Author { get; set; }
 
-    public AuthorDto Author1 { get; set; }
+    //used the specified property name
+    public AuthorDto CoAuthor { get; set; }
 }
 ```
 
@@ -96,4 +97,4 @@ In this version, we revised the **CMS Kit's Feedback Feature** and as a result,
 * `Default.cshtml` and `Default.js` files (under the **Pages/Public/Shared/Components/PageFeedbacks/** directory) have been updated. (no need for a change in your code, if you did not override the files)
 * `FeedbackUserId` property has been added to the `PageFeedback` entity, and that means you should create a new migration and apply it to your database.
 * `PageFeedbackManager.CreateAsync` method now expecting an additional parameter: ***Guid feedbackUserId***. (no need for a change in your code, if you did not override or use this file)
-* `PageFeedbackPublicAppService` has been updated due to saving the feedback user id. (no need for a change in your code, if you did not override or use this file)
+* `PageFeedbackPublicAppService` has been updated due to saving the feedback user id. (no need for a change in your code, if you did not override or use this file)