add link

Author: philnach

Extensions/Cosmos/README.md

@@ -88,8 +88,8 @@ Or with RBAC:
 - **`LimitToEndpoint`**: Optional, defaults to `false`. When the value of this property is false, the Cosmos DB SDK will automatically discover
   write and read regions, and use them when the configured application region is not available. 
   when set to `true`, availability is limited to the endpoint specified.
-  - **Note**: [TODO](LINK). When using the Cosmos DB Emulator Container for Linux it's been observed
-    setting the value to `true` enables migration of data. <-- TODO wordsmith.  
+  - **Note**: [CosmosClientOptions.LimitToEndpoint Property](https://learn.microsoft.com/dotnet/api/microsoft.azure.cosmos.cosmosclientoptions.limittoendpoint?view=azure-dotnet). When using the Cosmos DB Emulator Container for Linux it's been observed
+    setting the value to `true` enables import and export of data.  
 
 #### **Serverless Account**
 - **`IsServerlessAccount`**: Specifies whether the target account uses Serverless instead of Provisioned throughput, which affects the way containers are created.