docs: update vmxconfig

[tenthirtyam]

Description

Updates the documentation for the .vmx file configuration.

Testing

packer-plugin-vmware on  docs/update-vmxconfig
➜ go fmt ./... 

packer-plugin-vmware on  docs/update-vmxconfig
➜ make generate
2024/07/15 14:03:04 Copying "docs" to ".docs/"
2024/07/15 14:03:04 Replacing @include '...' calls in .docs/
Compiling MDX docs in '.docs' to Markdown in '.web-docs'...

packer-plugin-vmware on  docs/update-vmxconfig
➜ make test
?       github.com/hashicorp/packer-plugin-vmware       [no test files]
?       github.com/hashicorp/packer-plugin-vmware/version       [no test files]
ok      github.com/hashicorp/packer-plugin-vmware/builder/vmware/common 7.237s
ok      github.com/hashicorp/packer-plugin-vmware/builder/vmware/iso    2.611s
ok      github.com/hashicorp/packer-plugin-vmware/builder/vmware/vmx    1.616s

[lbajolet-hashicorp]

LGTM!