fix error: these keywords deal with items, not properties

Author: karenetheridge

src/oas.md

@@ -1272,8 +1272,8 @@ See [Working With Examples](#working-with-examples) for further guidance regardi
 | <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 By Name](#encoding-by-name).  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. This field MUST NOT be present if `prefixEncoding` or `itemEncoding` are present. |
-| <a name="media-type-prefix-encoding"></a>prefixEncoding | [[Encoding Object](#encoding-object)] | An array of positional encoding information, as defined under [Encoding By Position](#encoding-by-position).  The `prefixEncoding` field SHALL only apply when the media type is `multipart`. If no Encoding Object is provided for a property, the behavior is determined by the default values documented for the Encoding Object. This field MUST NOT be present if `encoding` is present. |
-| <a name="media-type-item-encoding"></a>itemEncoding | [Encoding Object](#encoding-object) | A single Encoding Object that provides encoding information for multiple array items, as defined under [Encoding By Position](#encoding-by-position). The `itemEncoding` field SHALL only apply when the media type is `multipart`. If no Encoding Object is provided for a property, the behavior is determined by the default values documented for the Encoding Object. This field MUST NOT be present if `encoding` is present. |
+| <a name="media-type-prefix-encoding"></a>prefixEncoding | [[Encoding Object](#encoding-object)] | An array of positional encoding information, as defined under [Encoding By Position](#encoding-by-position).  The `prefixEncoding` field SHALL only apply when the media type is `multipart`. If no Encoding Object is provided for an item, the behavior is determined by the default values documented for the Encoding Object. This field MUST NOT be present if `encoding` is present. |
+| <a name="media-type-item-encoding"></a>itemEncoding | [Encoding Object](#encoding-object) | A single Encoding Object that provides encoding information for multiple array items, as defined under [Encoding By Position](#encoding-by-position). The `itemEncoding` field SHALL only apply when the media type is `multipart`. If no Encoding Object is provided for an item, the behavior is determined by the default values documented for the Encoding Object. This field MUST NOT be present if `encoding` is present. |
 
 This object MAY be extended with [Specification Extensions](#specification-extensions).