message: docs(readme): increase api documentation title font size
diff: A Typescript transformer that will allow you to create mock for any types (Interfaces, Classes, ...) without need to create manual fakes/mocks.
  -[Api Documentation](https://typescript-tdd.github.io/ts-auto-mock)
  +## [Api Documentation](https://typescript-tdd.github.io/ts-auto-mock)
  * If you are interested to use it with jasmine please go to [jasmine-ts-auto-mock](https://github.com/uittorio/jasmine-ts-auto-mock)
  * If you are interested to use it with jest please go to [jest-ts-auto-mock](https://github.com/uittorio/jest-ts-auto-mock)
  