Fix broken link

Per PR feedback

Author: AdamBurtEtch

16/umbraco-cms/fundamentals/backoffice/property-editors/built-in-umbraco-property-editors/rich-text-editor/blocks.md

@@ -212,6 +212,6 @@ Building Custom Views for Block representations in Backoffice is the same for al
 
 ## Related Articles
 
-* [Element Types](../../../../../../data/defining-content/#element-types)
+* [Element Types](../../../../data/defining-content/default-document-types.md#element-types)
 * [Rich Text Editor Configuration](../configuration.md)
 * [Rich Text Editor Extensions](../extensions.md)