Update .spectral.yml

Co-Authored-By: Jakub Rożek <jakub@rozek.tech>

.spectral.yml

@@ -80,7 +80,7 @@ rules:
     type: "style"
     message: "Error response document MUST follow application/problem+json: {{error}}"
     then:
-      field: schema
+      field: schema.example
       function: schema
       functionOptions:
         schema:
@@ -136,4 +136,4 @@ rules:
   #   severity: error
   # response-303-async-link-header:
   #   description: A successful and finished async api request returns `303` response code and sends the target resource location in the `Link` header
-  #   severity: hint
+  #   severity: hint