docs: readme features are not parsable

[eljefedelrodeodeljefe]

Copy pasting the readme leads to cucumber parsing errors.

It should be...

Feature: Feature name

  Scenario: Testing Gets
    When I send a 'GET' request to '{base}/healthz'
    Then I should receive a response with the status 200
    And I should receive a response within 1000ms
    And the response body json path at "$.[1].name" should equal "Rover"

...I presume. Just mentioning to reduce friction getting started...

Kind reagards