If it's just a matter of having the datastore vm foldername match the display name of the VM object in vCenter, you can do a simple storage vMotion to make that happen while the VM is online. Assuming this advanced setting is still required if not default anymore: VMware Knowledge Base
LucD's solution will simply reregister VM to vCenter to the existing path, but will not match display name to datastore path of VM.
Chris Nakagaki (中垣浩一)
Blog: https://tech.zsoldier.com
Twitter: @zsoldier
