Update knowledge-store-projection-overview.md

Updates related to User Story 1646186: https://mseng.visualstudio.com/TechnicalContent/_workitems/edit/1646186

Author: john-par

articles/search/knowledge-store-projection-overview.md

@@ -111,9 +111,11 @@ Here is an example of table projections.
 
 As demonstrated in this example, the key phrases and entities are modeled into different tables and will contain a reference back to the parent (MainTable) for each row.
 
+<!---
 The following illustration is a reference to the Case-law exercise in [How to get started with knowledge store](knowledge-store-howto.md). In a scenario where a case has multiple opinions, and each opinion is enriched by identifying entities contained within it, you could model the projections as shown here.
 
 ![Entities and relationships in tables](media/knowledge-store-projection-overview/TableRelationships.png "Modeling relationships in table projections")
+--->
 
 ## Object projections