Update index.md

docs/index.md

@@ -6,12 +6,13 @@ The REST API (v2) can be used to query your website's backend database. This doc
 - [Generating an Access Token](generate-access-token.md)
 - [Request Format](request-format.md)
 - [Request/Response Options](request-response-options.md)
-- [Listings Model](listings-model.md)
-	- [Listings Fields](listings-model.md#listings-fields)
-	- [Example Listing Queries](listings-model.md#example-listing-queries)
-	- [Example Listings Docs](listings-model.md#example-listings-docs)
-	- [Listing Meta Fields](listings-model.md#listing-meta-fields)
-	- [Example Listing Meta data](listings-model.md#example-listing-meta-data)
+- [Listings Model - Legacy Version](listings-model.md)
+	- [Listings Fields](listings-legacy-model.md#listings-fields)
+	- [Example Listing Queries](listings-legacy-model.md#example-listing-queries)
+	- [Example Listings Docs](listings-legacy-model.md#example-listings-docs)
+	- [Listing Meta Fields](listings-legacy-model.md#listing-meta-fields)
+	- [Example Listing Meta data](listings-legacy-model.md#example-listing-meta-data)
+- [Listings Model - Apex Version](listings-apex-model.md)
 - [Events Model](events-model.md)
 	- [Events Fields](events-model.md#events-fields)
 	- [Example Event Data](events-model.md#example-event-data)
@@ -30,4 +31,4 @@ The REST API (v2) can be used to query your website's backend database. This doc
 - [Blog Post Model](blog-post-model.md)
 	- [Blog Post Fields](blog-post-model.md#blog-post-fields)
 	- [Example Blog Post Endpoint URLs](blog-post-model.md#example-blog-post-endpoint-urls)
-	- [Example Blog Post Data](blog-post-model.md#example-blog-post-data)
+	- [Example Blog Post Data](blog-post-model.md#example-blog-post-data)