fix: adds missing schema reference as an option of parameter schema and media type schema/item schema

Signed-off-by: Vincent Biret <[email protected]>

Author: baywet

src/oas.md

@@ -993,7 +993,7 @@ Serializing with `schema` is NOT RECOMMENDED for `in: "cookie"` parameters, `in:
 | <a name="parameter-style"></a>style | `string` | Describes how the parameter value will be serialized depending on the type of the parameter value. Default values (based on value of `in`): for `"query"` - `"form"`; for `"path"` - `"simple"`; for `"header"` - `"simple"`; for `"cookie"` - `"form"`. |
 | <a name="parameter-explode"></a>explode | `boolean` | When this is true, parameter values of type `array` or `object` generate separate parameters for each value of the array or key-value pair of the map. For other types of parameters this field has no effect. When [`style`](#parameter-style) is `"form"`, the default value is `true`. For all other styles, the default value is `false`. Note that despite `false` being the default for `deepObject`, the combination of `false` with `deepObject` is undefined. |
 | <a name="parameter-allow-reserved"></a>allowReserved | `boolean` | When this is true, parameter values are serialized using reserved expansion, as defined by [RFC6570](https://datatracker.ietf.org/doc/html/rfc6570#section-3.2.3), which allows [RFC3986's reserved character set](https://datatracker.ietf.org/doc/html/rfc3986#section-2.2), as well as percent-encoded triples, to pass through unchanged, while still percent-encoding all other disallowed characters (including `%` outside of percent-encoded triples). Applications are still responsible for percent-encoding reserved characters that are not allowed by the rules of the `in` destination or media type, or are [not allowed in the path by this specification](#path-templating); see Appendices [C](#appendix-c-using-rfc6570-based-serialization) and [E](#appendix-e-percent-encoding-and-form-media-types) for details. The default value is `false`. |
-| <a name="parameter-schema"></a>schema | [Schema Object](#schema-object) | The schema defining the type used for the parameter. |
+| <a name="parameter-schema"></a>schema | [Schema Object](#schema-object) \| [Reference Object](#reference-object) | The schema defining the type used for the parameter. |
 | <a name="parameter-example"></a>example | Any | Example of the parameter's potential value; see [Working With Examples](#working-with-examples). |
 | <a name="parameter-examples"></a>examples | Map[ `string`, [Example Object](#example-object) \| [Reference Object](#reference-object)] | Examples of the parameter's potential value; see [Working With Examples](#working-with-examples). |
 
@@ -1249,8 +1249,8 @@ See [Working With Examples](#working-with-examples) for further guidance regardi
 
 | Field Name | Type | Description |
 | ---- | :----: | ---- |
-| <a name="media-type-schema"></a>schema | [Schema Object](#schema-object) | A schema describing the complete content of the request, response, parameter, or header. |
-| <a name="media-type-item-schema"></a>itemSchema | [Schema Object](#schema-object) | A schema describing each item within a [sequential media type](#sequential-media-types). |
+| <a name="media-type-schema"></a>schema | [Schema Object](#schema-object) \| [Reference Object](#reference-object) | A schema describing the complete content of the request, response, parameter, or header. |
+| <a name="media-type-item-schema"></a>itemSchema | [Schema Object](#schema-object) \| [Reference Object](#reference-object) | A schema describing each item within a [sequential media type](#sequential-media-types). |
 | <a name="media-type-example"></a>example | Any | Example of the media type; see [Working With Examples](#working-with-examples). |
 | <a name="media-type-examples"></a>examples | Map[ `string`, [Example Object](#example-object) \| [Reference Object](#reference-object)] | Examples of the media type; see [Working With Examples](#working-with-examples). |
 | <a name="media-type-encoding"></a>encoding | Map[`string`, [Encoding Object](#encoding-object)] | A map between a property name and its encoding information, as defined under [Encoding Usage and Restrictions](#encoding-usage-and-restrictions).  The `encoding` field SHALL only apply when the media type is `multipart` or `application/x-www-form-urlencoded`. If no Encoding Object is provided for a property, the behavior is determined by the default values documented for the Encoding Object. |