Add "type" description to "package.json" documentation

[sdcaulley]

Many of the fields for the package.json have description, but not type. Type needs at least a description of what are the valid options.

[theengineear]

I also got caught by this recently. I tried to use https://docs.npmjs.com/cli/v10/configuring-npm/package-json as a source of truth to modernize the format of my package.json file, but now I’m questioning whether that was the right place to look for this information — is there a better place to look to understand the correct keywords to use?

EDIT: Just saw that @kenshanta has a PR open on exactly this keyword. Thanks!!