Add links to versioned docs for v0.12.1

README.md

@@ -45,6 +45,7 @@ The "Getting Started with Tekton Triggers" guide walks you through setting up an
 | Version                                                                                  | Docs                                                                                   | Examples                                                                                | Getting Started                                                                                                                 |
 | ---------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------- |
 | [HEAD](https://github.com/tektoncd/triggers/blob/main/DEVELOPMENT.md#install-pipeline) | [Docs @ HEAD](https://github.com/tektoncd/triggers/blob/main/docs/README.md)         | [Examples @ HEAD](https://github.com/tektoncd/triggers/blob/main/examples)            | [Getting Started @ HEAD](https://github.com/tektoncd/triggers/blob/main/docs/getting-started#getting-started-with-triggers)   |
+| [v0.12.1](https://github.com/tektoncd/triggers/releases/tag/v0.12.1)                       | [Docs @ v0.12.1](https://github.com/tektoncd/triggers/tree/v0.12.1/docs#tekton-triggers) | [Examples @ v0.12.1](https://github.com/tektoncd/triggers/tree/v0.12.1/examples#examples) | [Getting Started @ v0.12.1](https://github.com/tektoncd/triggers/tree/v0.12.1/docs/getting-started#getting-started-with-triggers) |
 | [v0.12.0](https://github.com/tektoncd/triggers/releases/tag/v0.12.0)                       | [Docs @ v0.12.0](https://github.com/tektoncd/triggers/tree/v0.12.0/docs#tekton-triggers) | [Examples @ v0.12.0](https://github.com/tektoncd/triggers/tree/v0.12.0/examples#examples) | [Getting Started @ v0.12.0](https://github.com/tektoncd/triggers/tree/v0.12.0/docs/getting-started#getting-started-with-triggers) |
 | [v0.11.2](https://github.com/tektoncd/triggers/releases/tag/v0.11.2)                       | [Docs @ v0.11.2](https://github.com/tektoncd/triggers/tree/v0.11.2/docs#tekton-triggers) | [Examples @ v0.11.2](https://github.com/tektoncd/triggers/tree/v0.11.2/examples#examples) | [Getting Started @ v0.11.2](https://github.com/tektoncd/triggers/tree/v0.11.2/docs/getting-started#getting-started-with-triggers) |
 | [v0.11.1](https://github.com/tektoncd/triggers/releases/tag/v0.11.1)                       | [Docs @ v0.11.1](https://github.com/tektoncd/triggers/tree/v0.11.1/docs#tekton-triggers) | [Examples @ v0.11.1](https://github.com/tektoncd/triggers/tree/v0.11.1/examples#examples) | [Getting Started @ v0.11.1](https://github.com/tektoncd/triggers/tree/v0.11.1/docs/getting-started#getting-started-with-triggers) |