Reword description of multiple repos

Co-authored-by: Claire Hughes <[email protected]>

README.md

@@ -22,6 +22,6 @@ ECF is a framework of standards to help early career teachers succeed at the sta
 
 Register early career teachers has two repositories, [an internal](https://github.com/DFE-Digital/register-ects-project-board) one and [a public one](https://github.com/DFE-Digital/register-early-career-teachers-public).
 
-We work on the internal one and regularly publish code to the public one. This helps minimise the risk of accidentally posting sensitive information in an issue or pull request.
+We write tickets and organise our sprints on the internal repository. The public one is where we write and update code. This helps minimise the risk of accidentally posting sensitive information in a ticket, but still allows for our code to be public and transparent.
 
 We still aim to work as openly as possible and will respond to any issues or pull requests raised against the public repository.