docs: add examples in soft delete doc (typeorm#9402)

Author: lucassouzamatos

docs/delete-query-builder.md

@@ -12,7 +12,7 @@ Examples:
 
 ```typescript
 await myDataSource
-    .createQueryBuilder()
+    .createQueryBuilder('users')
     .delete()
     .from(User)
     .where("id = :id", { id: 1 })
@@ -29,10 +29,30 @@ Applying Soft Delete to QueryBuilder
 await dataSource.getRepository(Entity).createQueryBuilder().softDelete()
 ```
 
+Examples:
+
+```typescript
+await myDataSource
+  .createQueryBuilder('users')
+  .softDelete()
+  .where("id = :id", { id: 1 })
+  .execute();
+```
+
 ### `Restore-Soft-Delete`
 
 Alternatively, You can recover the soft deleted rows by using the `restore()` method:
 
 ```typescript
 await dataSource.getRepository(Entity).createQueryBuilder().restore()
 ```
+
+Examples:
+
+```typescript
+await myDataSource
+  .createQueryBuilder('users')
+  .restore()
+  .where("id = :id", { id: 1 })
+  .execute();
+```