Merge pull request #4513 from segmentio/niall/eu_source

Add instructions on how to get an EU workspace for Source testing

Author: pwseg

src/partners/sources.md

@@ -108,6 +108,9 @@ Use the [Source Debugger](/docs/connections/sources/debugger/) to observe inboun
 
 Check the Source Debugger to verify that the events arrive and are formatted according to the Segment Spec.
 
+> info ""
+>  To test an EU workspace, reach out to Support through the Developer Portal. They can follow up on provisioning you an appropriate workspace.
+
 ## Write your source's documentation
 
 Documentation is integral to enabling Segment's users to self-serve and onboard with your integration. Segment's documentation team will work with you during this part of the process to ensure your documentation matches the Segment style and is as instructive as possible.