More hardening with digitla ocean

some ref handling was a bit strange, now it's rendering correctly. I have a feeling we will be back to the diff engine at some point soon, it's picking up some strange changes that are so deep in the model, I can't determine what is what, so we will wait for another set of triggers to appear.

what-changed/model/response_test.go

@@ -22,6 +22,8 @@ headers:
     description: a header
 examples:
   bam: alam
+server:
+  url: https://example.com
 x-toot: poot`
 	right := left