Conform doc comments to TSDoc spec (experiment)

[jakebailey]

This is just an experiment to see what it'd be like to conform to the TSDoc spec. The main change is the requirement of a dash after the parameter name, which the plugin complains about (however, their parser is lenient and doesn't need it; I wish the lint didn't complain, see microsoft/tsdoc#220).

Their ESLint plugin is thankfully not too slow to add:

tsdoc/syntax                                     |   267.625 |     1.8%

The generated TS lib files would also need to be updated, but we don't lint those as they come from the DOM generator.

[typescript-bot]

Thanks for the PR! It looks like you've changed the TSServer protocol in some way. Please ensure that any changes here don't break consumers of the current TSServer API. For some extra review, we'll ping @sheetalkamat, @amcasey, @mjbvz, @minestarks for you. Feel free to loop in other consumers/maintainers if necessary

[jakebailey]

Thanks bot for pinging everyone... 😠