docs(vmware-migration): document StorageMap for VMs spanning multiple datastores

[jing2uo]

Summary

• Expand the StorageMap section of the VMware → ACP migration guide (both ZH and EN) so it covers VMs whose disks live on more than one VMware datastore.
• Split the section into Single Datastore / Multiple Datastores subsections, add a multi-datastore YAML example, document that each source datastore must appear in spec.map exactly once and may share or differ in destination.storageClass, and add a tip on how to discover a VM's datastore distribution (vCenter Edit Settings or Forklift inventory disks[*].datastore.id).

Test plan

• Render docs/zh/solutions/How_to_Migrate_VirtualMachine_From_VMware.md and verify the new Single/Multiple Datastores subsections display correctly
• Render docs/en/solutions/How_to_Migrate_VirtualMachine_From_VMware.md and verify the same
• Sanity-check the multi-datastore StorageMap YAML against the forklift.konveyor.io/v1beta1 CRD

🤖 Generated with Claude Code

Summary by CodeRabbit

• Documentation
  • Enhanced VMware migration guide with expanded StorageMap configuration requirements and practical examples
  • Added comprehensive guidance for single-datastore and multi-datastore migration scenarios
  • Included instructions for determining VM disk placement locations
  • Documentation updates available in English and Chinese