fix link (SpecFlowOSS#2455)

docs/Extend/Available-Plugins.md

@@ -19,7 +19,7 @@
 | [SpecFlow Shared Steps](https://github.com/Bakanych/SpecFlowSharedSteps)|SpecFlow step definitions to reuse scenario steps. [Read more...](https://github.com/Bakanych/SpecFlowSharedSteps)|<a href="https://www.nuget.org/packages/SpecFlow.SharedSteps/">![](https://img.shields.io/nuget/v/SpecFlow.SharedSteps.svg)</a>|
 | [SpecFlow.Assist.Dynamic](https://github.com/marcusoftnet/SpecFlow.Assist.Dynamic) | Extension methods to create dynamic objects from SpecFlow tables. [Read more...](https://github.com/marcusoftnet/SpecFlow.Assist.Dynamic) | <a href="https://www.nuget.org/packages/SpecFlow.Assist.Dynamic/">![](https://img.shields.io/nuget/v/SpecFlow.Assist.Dynamic.svg)</a> |
 | [SpecFlow.Contrib.Variants](https://github.com/totaltest/SpecFlow.Contrib.Variants) | SpecFlow plugin to allow variants of a test to be run using tags. [Read more...](https://github.com/totaltest/SpecFlow.Contrib.Variants) | <a href="https://www.nuget.org/packages/SpecFlow.Contrib.Variants/">![](https://img.shields.io/nuget/vpre/SpecFlow.Contrib.Variants.svg)</a>|
-| [SpecFlow.External Data](https://www.nuget.org/packages/SpecFlow.ExternalData/3.4.32-beta) | Package to use external data in Gherkin scenarios. [Read more...](../Guides/externaldata.md) | <a href="https://www.nuget.org/packages/SpecFlow.ExternalData/3.4.32-beta">![](https://img.shields.io/nuget/vpre/SpecFlow.ExternalData.svg)</a>|
+| [SpecFlow.External Data](https://www.nuget.org/packages/SpecFlow.ExternalData/3.4.32-beta) | Package to use external data in Gherkin scenarios. [Read more...](https://docs.specflow.org/projects/specflow/en/latest/Guides/externaldata.html) | <a href="https://www.nuget.org/packages/SpecFlow.ExternalData/3.4.32-beta">![](https://img.shields.io/nuget/vpre/SpecFlow.ExternalData.svg)</a>|
 
 
 ## Outdated Plugins