feat: Update index.md (apify#1858)

Author: jancurn

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

@@ -1,11 +1,11 @@
 ---
-title: Dataset schema
+title: Dataset schema specification
 sidebar_position: 3
 description: Learn how to define and present your dataset schema in an user-friendly output UI.
 slug: /actors/development/actor-definition/dataset-schema
 ---
 
-# Dataset Schema Specification
+# Dataset schema specification
 
 **Learn how to define and present your dataset schema in an user-friendly output UI.**