Merge pull request #5283 from karenetheridge/ether/v3.3-contentType-format

v3.3: fix schema error in contentType

Author: miqui

src/schemas/validation/schema.yaml

@@ -608,8 +608,8 @@ $defs:
     type: object
     properties:
       contentType:
+        $comment: one or more comma-separated media-ranges
         type: string
-        format: media-range
       headers:
         type: object
         propertyNames: