Link to dashboard block reference fixed (#2328)

Author: julitafalcondusza

docs/administration/dashboard/customize_dashboard.md

@@ -32,7 +32,7 @@ For more information, see [Customize storefront layout](customize_storefront_lay
 
 Dashboard builder provides set of ready-to-use blocks, for example, Common content, Quick actions, or [[= product_name =]] News.
 
-For more information about available blocks, see [[[= product_name =]] user documentation](https://doc.ibexa.co/projects/userguide/en/latest/getting_started/dashboard_block_reference/).
+For more information about available blocks, see [[[= product_name =]] user documentation](https://doc.ibexa.co/projects/userguide/en/latest/getting_started/dashboard/dashboard_block_reference/).
 
 In addition to existing blocks available in Dashboard Builder, you can also create custom blocks.