reviewed, added TRACE for #325

Author: fehguy

Diff for: versions/3.0.md

@@ -418,6 +418,7 @@ Field Name | Type | Description
 <a name="pathItemOptions"></a>options | [Operation Object](#operationObject) | A definition of a OPTIONS operation on this path.
 <a name="pathItemHead"></a>head | [Operation Object](#operationObject) | A definition of a HEAD operation on this path.
 <a name="pathItemPatch"></a>patch | [Operation Object](#operationObject) | A definition of a PATCH operation on this path.
+<a name="pathItemTrace"></a>trace | [Operation Object](#operationObject) | A definition of a TRACE operation on this path.
 <a name="pathItemServer"></a>[Server Object](#serverObject) | An alternative `server` object to service this operation.  
 <a name="pathItemParameters"></a>parameters | [[Parameter Object](#parameterObject) <span>&#124;</span> [Reference Object](#referenceObject)] | A list of parameters that are applicable for all the operations described under this path. These parameters can be overridden at the operation level, but cannot be removed there. The list MUST NOT include duplicated parameters. A unique parameter is defined by a combination of a [name](#parameterName) and [location](#parameterIn). The list can use the [Reference Object](#referenceObject) to link to parameters that are defined at the [OpenAPI Object's parameters](#oasParameters).