fix: updated template file to fix whitespace issue.

[YanniHu1996]

Updated template file to keep whitespace appear once at the end of the file

[hashicorp-cla]

All committers have signed the CLA.

[serdardalgic]

If there is no import defined for a resource, tfplugindocs generates empty whitespaces at the end of the generated document.

This PR is fixing this issue. For our provider, we need this change, is there anything we can do to support you folks?

[austinvalle]

Hi there 👋🏻 , thanks for the PR! I left one small suggestion.

[YanniHu1996]

Thanks @austinvalle and @serdardalgic 👍 , I taken the suggestion of @austinvalle

[austinvalle]

Thanks for the contribution @YanniHu1996 & @serdardalgic !

[austinvalle]

The change will be released with our next feature or bug release of terraform-plugin-docs, although we don't currently have a plan for that next release.

In the meantime, you can install the commit (e8f8eb1) specific version of the tool (or branch, whatever better fits your need):

go get -u github.com/hashicorp/terraform-plugin-docs@e8f8eb1f6dbb047551ceedd48e7810c6c6661d03