minor readme mistake

[AhmedHanyGamal]

In the readme.md, all of the functions that return RelativeIdentifierComponents or AbsoluteIdentifierComponents instead return IdentifierComponents

Could you please confirm whether the readme should be updated? If so, I’d be happy to submit a PR to fix it.

[jdesrosiers]

Sure. Go ahead.

[AhmedHanyGamal]

#10
Done