[bitnami/grafana-operator] Fixes the indentation for the auth subsections within config section.

[fabio-s-franco]

Fixes a couple of links that were broken (outdaten).

Description of the change

Fixes indentation of commented-out auth sections that would error if attempted to use from the values file.
The changes have no direct impact as they only modify commented parts.

Fixed a couple of documentation reference links.

Benefits

Prevents user from having to debug the reason for the error when attempting to enable the auth examples.

Possible drawbacks

None

Applicable issues

• fixes [bitnami/grafana-operator] spec.config.security.auth in body must be of type string: "object" #25235

Additional information

There may still be other broken (outdated) reference hyperlinks.

Checklist

• Chart version bumped in Chart.yaml according to semver. This is not necessary when the changes only affect README.md files.
• Variables are documented in the values.yaml and added to the README.md using readme-generator-for-helm
• Title of the pull request follows this pattern [bitnami/<name_of_the_chart>] Descriptive title
• All commits signed off and in agreement of Developer Certificate of Origin (DCO)

[andresbono]

LGTM, thank you so much for your contribution!!