Merge pull request #1221 from OAI/dm/callback-example-link

Callback example link

versions/3.0.md

@@ -1820,7 +1820,7 @@ The key value used to identify the callback object is an expression, evaluated a
 ##### Patterned Fields
 Field Pattern | Type | Description
 ---|:---:|---
-<a name="callbackExpression"></a>{expression} | [Path Item Object](#pathItemObject) | A Path Item Object used to define a callback request and expected responses.  A full example may be found at https://github.com/OAI/OpenAPI-Specification/blob/OpenAPI.next/examples/v3.0/callback-example.yaml
+<a name="callbackExpression"></a>{expression} | [Path Item Object](#pathItemObject) | A Path Item Object used to define a callback request and expected responses.  A [complete example](https://github.com/OAI/OpenAPI-Specification/blob/OpenAPI.next/examples/v3.0/callback-example.yaml) is available.
 
 This object can be extended with [Specification Extensions](#specificationExtensions).