Update src/connections/sources/custom-domain.md

Author: forstisabella

src/connections/sources/custom-domain.md

@@ -60,7 +60,7 @@ To configure Custom Domain:
 ## FAQ
 
 ### Can I set up multiple Custom Domains?
-For best practices, Segment recommends using only **one** subdomain (e.g., `mysubdomain.mydomain.com`) per domain. Multiple custom domains for the same source are not supported.
+Segment recommends creating a different subdomain (for example, `mysubdomain.mydomain.com`) for each source. You cannot connect multiple custom domains to the same source.
 
 ### What sources can I use with Custom Domain?
 Custom Domain was largely developed to support JavaScript sources. It helps with comprehensive collection of first-party data from your website when accessed over any platform (desktop, mobile, and more). You can use the subdomain for all other non-JavaScript sources as well, for consistency, but it will have no impact on data collection for those sources.