Update spec.yaml

Co-authored-by: Giuseppe Lo Presti <[email protected]>

Author: mickenordin

spec.yaml

@@ -424,7 +424,7 @@ components:
           example:
             - webdav-uri
             - protocol-object
-            - rfc-http-sig
+            - http-sig
         criteria:
           type: array
           description: |