change to create a PR

Author: Vlasis-Perdikidis

README.md

@@ -138,3 +138,5 @@ Deployments can be made of any [release](https://github.com/NHSDigital/nhs-notif
 Unless stated otherwise, the codebase is released under the MIT License. This covers both the codebase and any sample code in the documentation.
 
 Any HTML or Markdown documentation is [© Crown Copyright](https://www.nationalarchives.gov.uk/information-management/re-using-public-sector-information/uk-government-licensing-framework/crown-copyright/) and available under the terms of the [Open Government Licence v3.0](https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/).
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+to open a PR