Update README.md

Author: mnuttall

tekton-example/README.md

@@ -4,7 +4,7 @@ An example of using `promote` in a Tekton Pipeline to promote a service's config
 
 ## Tekton APIs: v1alpha1 and v1beta1
 
-Tekton Pipelines introduced new [v1beta1](https://github.com/tektoncd/pipeline/blob/master/docs/migrating-v1alpha1-to-v1beta1.md) APIs with its 0.11.x release. We first developed this sample against v1alpha1 APIs, but now include both v1alpha1 and v1beta1 versions of this sample. The v1beta1 version uses no Tekton PipelineResources, in the spirit of [this](https://github.com/tektoncd/pipeline/blob/master/docs/migrating-v1alpha1-to-v1beta1.md#replacing-pipelineresources-with-tasks) section of the migration document. You should use Tekton Pipelines v0.12.1 or higher and the v1beta1 samples unless you are unable to do so, or wish to use the code in the final section, 'Promote to Next Managed Environment'. This has only been implemented under the v1alpha1 sample. We're still working through how promotion between GitOps repositories should work, so this last section is fairly expermimental.
+Tekton Pipelines introduced new [v1beta1](https://github.com/tektoncd/pipeline/blob/master/docs/migrating-v1alpha1-to-v1beta1.md) APIs with its 0.11.x release. We first developed this sample against v1alpha1 APIs, but now include both v1alpha1 and v1beta1 versions of this sample. The v1beta1 version uses no Tekton PipelineResources, in the spirit of [this](https://github.com/tektoncd/pipeline/blob/master/docs/migrating-v1alpha1-to-v1beta1.md#replacing-pipelineresources-with-tasks) section of the migration document. You should use Tekton Pipelines v0.12.1 or higher and the v1beta1 samples unless you are unable to do so, or wish to use the code in the final section, 'Promote to Next Managed Environment'. This has only been implemented under the v1alpha1 sample. We're still working through how promotion between GitOps repositories should work, so this last section is fairly experimental.
 
 ## Template Files