RHEL-Based Distro: Update Online Documentation to Warn Users OpenZFS is Unfit for Production Use on RHEL Systems

The online documentation is out of date and does not reflect the current state of development of OpenZFS. As evident by the fact the kernel module does not even build on the non testing branch of OpenZFS, the 2.2.x branch has an unresolved issue on EL9.6 kernels, and concerns regarding stability of the current stable branches, OpenZFS is not suitable for production environments on RHEL and RHEL based platforms, and this should be clearly noted in the documentation.

As the documentation is "totally hand-made", I am more than happy to contribute the necessary changes so development effort may focus on more critical issues.