Update README.md

Author: pgleeson

README.md

@@ -153,6 +153,7 @@ Running validation tests locally ensures that you can quickly check if any chang
 Since you can run the validation with different [engines](https://github.com/OpenSourceBrain/osb-model-validation/tree/master/omv/engines) to use different simulators, this also allows you to quickly verify that your model gives similar results using these different tools.
 
 
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 ### Running tests automatically on GitHub Actions
 
 To use OMV with GHA, copy an existing configuration file, e.g. https://github.com/OpenSourceBrain/ACnet2/blob/master/.github/workflows/omv-ci.yml and place it in the required repository.