Update index.md

Author: Blargian

docs/managing-data/core-concepts/index.md

@@ -3,7 +3,7 @@ slug: /managing-data/core-concepts
 title: 'Core Concepts'
 description: 'Learn Core Concepts of how ClickHouse works'
 keywords: ['concepts', 'part', 'partition', 'primary index']
-show_related:blogs: false
+show_related_blogs: false
 ---
 
 In this section of the documentation,