Minor error in authentication-guard-methods.svg

[ThomasLandauer]

In authentication-guard-methods.svg on https://symfony.com/doc/current/security/guard_authentication.html#the-guard-authenticator-methods there is a minor error:

supportsRememberMe is not called in any case (as the picture suggests), but only if remember_me is configured for the firewall in security.yaml.

I'd suggest to add a note in parentheses, e.g.:

(if remember_me is configured)

[xabbuh]

@ThomasLandauer Sounds reasonable to me. Would you like to work on a PR?