Enhance the support section

[jennyhuang17]

Currently, the support information in the doc site directs users to open a git issue. However, this should really be their last choice since they'll be unable to send their logs and this approach has no SLAs.

Recommended process for getting support should be similar to this:
Users can get support from either Red Hat or the community.
They should go to Red Hat first, if RH defines that the issue is related to IBM, it'll redirect users to IBM.
If users choose to get the community support, they should be aware that their issues might not be resolved right away.

Reference: https://ibm-systems-z.slack.com/archives/D02HN8Q7X5J/p1701219160689749

[jennyhuang17]

I'd like to redesign the whole FAQ section – the current structure does not really make sense to me. Maybe something like the Help section in this documentation: