📝(readme) wording for test environment

Users do not need to log in to test.

Co-authored-by: Samuel Paccoud <[email protected]>

Author: virgile-dev

README.md

@@ -46,7 +46,7 @@ Docs is a collaborative text editor designed to address common challenges in kno
 
 ### Test it
 
-Test Docs on your browser by logging in on this [environment](https://impress-preprod.beta.numerique.gouv.fr/docs/6ee5aac4-4fb9-457d-95bf-bb56c2467713/)
+Test Docs on your browser by visiting this [demo document](https://impress-preprod.beta.numerique.gouv.fr/docs/6ee5aac4-4fb9-457d-95bf-bb56c2467713/)
 
 ### Run it locally