Add documentation page for version
Add documentation page for version

The version command, although not the mightiest of our commands,
did not have a page among our docs.

ewbankkit/terraform,ewbankkit/terraform,apparentlymart/terraform,tommynsong/terraform,hashicorp/terraform,rnaveiras/terraform,ewbankkit/terraform,apparentlymart/terraform,hashicorp/terraform,rnaveiras/terraform,tommynsong/terraform,apparentlymart/terraform,rnaveiras/terraform,apparentlymart/terraform,apparentlymart/terraform,tommynsong/terraform,ewbankkit/terraform,hashicorp/terraform