Update relationship.md

Author: stgelaisalex

docs2/pages/documentations/relationship/relationship.md

@@ -11,7 +11,7 @@ connection.BulkInsert(lefts)
 ```
 
 
-In this article, you will learn how to handle this kind of relation:
+In this tutorial, you will learn how to handle this kind of relation:
 - [Foreign Key Property](#foreign-key-property)
 - [Navigation Property](#navigation-property)
 
@@ -160,4 +160,4 @@ DapperPlusManager.Entity<Right>().Table("Right")
 connection.BulkInsert(lefts)
           .ThenForEach(x => x.Rights.ForEach(y => y.Left = x))
           .ThenBulkInsert(x => x.Rights);
-```
+```