message: STYLE: recommend prefix of type parameter names
diff: @@ -15,6 +15,7 @@ Our TypeScript style is inspired by the [style guidelines](https://github.com/Mi
  1. Use camelCase for property names and local variables.
  1. Do not use `_` as a prefix for private properties.
  1. Use whole words in names when possible.
  +1. Give type parameters names prefixed with `T`, for example `Request<TBody>`.
  ## Syntax and Types
  