add instructions for site admins to view their own Deep Search usage limits (#1373)

add instructions for site admins to view their own Deep Search usage
limits

Signed-off-by: Emi <[email protected]>

Author: emidoots

docs/deep-search/index.mdx

@@ -67,3 +67,7 @@ Deep Search is only available to customers using Sourcegraph’s built-in model
 ## API access
 
 For programmatic access to Deep Search functionality, see the [Deep Search API documentation](/deep-search/api).
+
+## Monitoring consumption
+
+Customers can request access to [Enterprise Portal](/enterprise-portal#deep-search-usage-monitoring) to monitor Deep Search usage and quota limits..

docs/enterprise-portal/index.mdx

@@ -29,3 +29,11 @@ Users can be invited individually or in bulk. If there is no [Sourcegraph Accoun
 Subscription admins can view [Sourcegraph Analytics](/analytics) for the subscription.
 
 ![Sourcegraph Enterprise Portal analytics](https://storage.googleapis.com/sourcegraph-assets/Docs/enterprise-portal-analytics.png)
+
+### Deep Search usage monitoring
+
+Site administrators can view their own [Deep Search](/deep-search) usage for the current quota period directly in the Enterprise Portal. This provides visibility into consumption relative to usage limits.
+
+To access usage information, you must first [access the Enterprise Portal](#accessing-sourcegraph-enterprise-portal) as a subscription admin.
+
+![Enterprise Portal Deep Search usage](https://storage.googleapis.com/sourcegraph-assets/Docs/enterprise-portal-deep-search-quota-2.jpg)