fix: Update readme

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

README.md

@@ -1,8 +1,6 @@
 # Nextcloud Two-Factor Authentication Admin Support Provider
 
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 [![Read the Docs](https://img.shields.io/readthedocs/nextcloud-twofactor-admin.svg)](https://nextcloud-twofactor-admin.readthedocs.io/en/latest/)
 
 This two-factor auth (2FA) provider for Nextcloud allows admins to generate a one-time