docs: fix OpenAPI product_extended.yaml

that was blocking rendering in rapidoc

docs/api/ref/schemas/product_extended.yaml

@@ -92,11 +92,11 @@ properties:
         description: |
           you can retrieve all kind of properties, the same as on the parent object (the product).
           It's not processed entries (like tags for example) but raw ones.
-        type:
-          oneOf:
-            - integer
-            - string
-            - object
+        type: object
+        oneOf:
+          - integer
+          - string
+          - object
   nova_groups_markers:
     type: object
     description: |

docs/api/ref/schemas/product_nutrition.yaml

@@ -98,6 +98,7 @@ properties:
 
           [units-module]: https://openfoodfacts.github.io/openfoodfacts-server/dev/ref-perl-pod/ProductOpener/Units.html
           [default-unit]: https://openfoodfacts.github.io/openfoodfacts-server/dev/ref-perl-pod/ProductOpener/Food.html#default_unit_for_nid_(_%24nid)
+        type: string
         enum: ['公斤', '公升', 'kg', 'кг', 'l', 'л', '毫克', 'mg', 'мг', 'mcg', 'µg', 'oz', 'fl oz', 'dl', 'дл', 'cl', 'кл', '斤', 'g', '', ' ', 'kj', '克', '公克', 'г', 'мл', 'ml', 'mmol/l', '毫升', '% vol', 'ph', '%', '% dv', '% vol (alcohol)', 'iu', 'mol/l', 'mval/l', 'ppm', '�rh', '�fh', '�e', '�dh', 'gpg']
       '(?<nutrient>\w+)_100g':
         description: |