Storage support documentation is inconsistent between README and hypervisor support guide

[rishi-jat]

I noticed a documentation inconsistency regarding supported storage backends.

README.md lists additional storage options beyond initramfs for some guest/hypervisor combinations. For example, the supported platforms table mentions storage types such as Block/Devmapper, 9pfs, and Virtiofs.

However, docs/hypervisor-support.md states that only initramfs is supported for both QEMU and Firecracker.

This makes it unclear which document reflects the current state of support.

Files:

• README.md
• docs/hypervisor-support.md

Could someone clarify which document is authoritative and whether one of them needs to be updated?

[rishi-jat]

/cc @cmainas
/cc @ananos