Merge pull request OAI#1571 from notEthan/server_variable_default_sup…

…plier

fix wording on who supplies the default value for a server variable

versions/3.0.2.md

@@ -429,7 +429,7 @@ An object representing a Server Variable for server URL template substitution.
 Field Name | Type | Description
 ---|:---:|---
 <a name="serverVariableEnum"></a>enum | [`string`] | An enumeration of string values to be used if the substitution options are from a limited set.
-<a name="serverVariableDefault"></a>default | `string` |  **REQUIRED**. The default value to use for substitution, and to send, if an alternate value is _not_ supplied. Unlike the [Schema Object's](#schemaObject) `default`, this value MUST be provided by the consumer.
+<a name="serverVariableDefault"></a>default | `string` |  **REQUIRED**. The default value to use for substitution, which SHALL be sent if an alternate value is _not_ supplied. Note this behavior is different than the [Schema Object's](#schemaObject) treatment of default values, because in those cases parameter values are optional.
 <a name="serverVariableDescription"></a>description | `string` | An optional description for the server variable. [CommonMark syntax](http://spec.commonmark.org/) MAY be used for rich text representation.
 
 This object MAY be extended with [Specification Extensions](#specificationExtensions).