Update account.md (#4504)

* Update account.md

Added FreeOTP+ as another 2FA app, completely open sourced & available at F-Droid as well.

* Update account.md

---------

Co-authored-by: Jaap Marcus <9754650+jaapmarcus@users.noreply.github.com>

docs/docs/user-guide/account.md

@@ -27,13 +27,13 @@ If you do not have an authenticator app, here are a couple of recommendations.
 - iCloud Keychain – [Windows](https://9to5mac.com/2022/07/25/icloud-passwords-windows-2fa-code/), [macOS](https://9to5mac.com/2021/11/16/use-safari-password-manager-and-2fa-autofill/), [iOS](https://9to5mac.com/2022/03/07/use-ios-15-2fa-code-generator-plus-autofill-iphone/)
 - [Tofu Authenticator](https://www.tofuauth.com/) – Open-source, iOS only
 - [Aegis Authenticator](https://getaegis.app/) – Open-source, Android only
-- [Raivo OTP](https://github.com/raivo-otp/) – Open-source, iOS and macOS only
 - [Google Authenticator](https://googleauthenticator.net/)
 - [Microsoft Authenticator](https://www.microsoft.com/en-ca/security/mobile-authenticator-app)
 - [Authy](https://authy.com/) – Free, has a cloud sync feature
 - [1Password](https://1password.com/) – Paid password manager
 - [Bitwarden](https://bitwarden.com/) – Password manager. 2FA in premium plan only
 - [Vaultwarden](https://docs.cloudron.io/apps/vaultwarden) (AGPL, [self-hosted](https://hub.docker.com/r/vaultwarden/server)), optionally with [Bitwarden](https://linuxiac.com/how-to-install-vaultwarden-password-manager-with-docker) clients
+- [FreeOTP+](https://github.com/helloworld1/FreeOTPPlus) - Open Source, Android only [F-Droid](https://f-droid.org/en/packages/org.liberty.android.freeotpplus/)
 
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