apitools.dev links in README.md broken

[kornysietsma]

Multiple links in the README.md point to a docs path in apitools.dev:

[Resolves](https://apitools.dev/swagger-parser/docs/swagger-parser.html#resolveapi-options-callback)

These should instead be https://apitools.dev/swagger-parser/swagger-parser.html - there is no docs in the correct URLs.

[madskchristensen]

I just want to add that both links are broken

[betterphp]

Looks like the domain name expired :/

[madskchristensen]

As a temporary work-around the docs can be found in /docs on this repo.