cloud: clarify managed settings (#998)

ref CLO-1287

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Author: michaellzc

docs/cloud/index.mdx

@@ -190,7 +190,7 @@ Supported destinations:
 - The Sourcegraph instance can only be accessible via a public IP. Running it in a private network and pairing it with your private network via site-to-site VPN or VPC Peering is not yet supported.
 - Code hosts or user authentication providers running in a private network are not yet supported. They have to be publicly available or they must allow incoming traffic from Sourcegraph-owned static IP addresses. We do not have proper support for other connectivity methods, e.g. site-to-site VPN, VPC peering, tunneling.
 - Instances currently run only on Google Cloud Platform in the [chosen regions](#multiple-region-availability). Other regions and cloud providers (such as AWS or Azure) are not yet supported.
-- Some [configuration options](/admin/config/) are managed by Sourcegraph and cannot be overridden by customers, e.g. feature flags, experimental features.
+- Some [configuration options](/admin/config/) are managed by Sourcegraph and cannot be overridden by customers, e.g. feature flags, experimental features, and auto-indexing policy. Please reach out to your account team if you would like to make changes to these settings.
 
 ## Security