Simplify VSCode settings examples in README

[br3ndonland]

Description

The VSCode settings.json examples in the README show duplicate settings for [opentofu] and [opentofu-vars] language keys.

This is unnecessary because multiple language keys can be included together.

This:

{
  "[opentofu]": {
    "editor.defaultFormatter": "opentofu.opentofu",
    "editor.formatOnSave": true,
    "editor.formatOnSaveMode": "file"
  },
  "[opentofu-vars]": {
    "editor.defaultFormatter": "opentofu.opentofu",
    "editor.formatOnSave": true,
    "editor.formatOnSaveMode": "file"
  }
}

Can be written like this:

{
  "[opentofu][opentofu-vars]": {
    "editor.defaultFormatter": "opentofu.opentofu",
    "editor.formatOnSave": true,
    "editor.formatOnSaveMode": "file"
  }
}

Changes

This PR will remove the unnecessary code duplication in the VSCode settings.json examples in the README.

Related

• VSCode Docs: User and Workspace Settings

[diofeher]

Thanks for the pull request @br3ndonland !

I've added a small modification to make the name of the formatter valid. opentofu.opentofu would be used for Gamunu's repo, but since we're using a different name here, that's what we should use it.

[Gogotchuri]

Forgot another place @diofeher