Update index.mdx to include inbound-ip-addresses snippet

contents/docs/data-warehouse/setup/index.mdx

@@ -35,6 +35,10 @@ The other option is a self-managed source, which include:
 
 You can find the set up instructions in-app or in the source specific docs.
 
+import InboundIpAddresses from './snippets/inbound-ip-addresses.mdx'
+
+<InboundIpAddresses />
+
 ## Linking a custom source
 
 The data warehouse can link to data in your object storage system. To do this, you'll need to: