fix lint errors

Author: TC-MO

sources/platform/actors/development/actor_definition/dataset_schema/validation.md

@@ -104,12 +104,13 @@ If the data you attempt to store in the dataset is _invalid_ (meaning any of the
 }
 ```
 
-The type of the AJV validation error object is [here](https://github.com/ajv-validator/ajv/blob/master/lib/types/index.ts#L86).
+For the complete AJV validation error object type definition, refer to the [AJV type definitions on GitHub](https://github.com/ajv-validator/ajv/blob/master/lib/types/index.ts#L86).
 
 If you use the Apify JS client or Apify SDK and call `pushData` function you can access the validation errors in a `try catch` block like this:
 
 <Tabs>
   <TabItem value="Javascript" label="Javascript" default>
+
 ```javascript
 try {
     const response = await Actor.pushData(items);
@@ -120,8 +121,10 @@ try {
     });
 }
 ```
+
   </TabItem>
   <TabItem value="Python" label="Python">
+
 ```python
 from apify import Actor
 from apify_client.errors import ApifyApiError
@@ -132,8 +135,8 @@ async with Actor:
     except ApifyApiError as error:
         if 'invalidItems' in error.data:
             validation_errors = error.data['invalidItems']
-
 ```
+
   </TabItem>
 </Tabs>