Merge pull request #263 from akeneo/example-fix

Small fixes on ref entities attr examples

Author: NolwennP

content/swagger/resources/reference_entity_attributes/definitions/reference_entity_attribute.yaml

@@ -91,6 +91,6 @@ example: {
   "max_characters": null,
   "is_textarea": true,
   "is_rich_text_editor": true,
-  "validation_rule": null,
+  "validation_rule": "none",
   "validation_regexp": null
 }

content/swagger/resources/reference_entity_attributes/routes/reference_entity_attributes.yaml

@@ -29,7 +29,7 @@ get:
           "max_characters": null,
           "is_textarea": true,
           "is_rich_text_editor": true,
-          "validation_rule": null,
+          "validation_rule": "none",
           "validation_regexp": null
         },
         {