Make it clearer in the doc the difference between using a relative and an absolute path

[zanella]

The doc mentions the term "relative URL" but doesn't explicitly differentiates between using an absolute and a relative one, e.g.:
@GET("users/list") vs @GET("/users/list"), they seem to be resolved here.

I believe it would be better to explicitly mention the difference in the page quick doc/example, or deny absolute URLs.

influxdata/influxdb-java#268

[JakeWharton]

It's documented on Retrofit.Builder#baseUrl which every HTTP method annotation links to with the statement:

See base URL for details of how this is resolved against a base URL to create the full endpoint URL.

[zanella]

I'm not saying it's not documented, I'm advocating for making it a bit more explicit on the "quick-steps" doc on the page. My point being that there's no need to inflict unnecessary missteps onto a new user with such a mundane detail.