[typo] wrong rfc reference in about

[NCPlayz]

The about of this repository refers to RFC 6750 which is for OAuth2 Bearer Token Usage, it should refer to RFC 6570 for URI Templates.

[sigmavirus24]

I'd be happy to merge a pull request that fixes that

[NCPlayz]

Sorry, should've been a bit more specific, it's in the description of this repository (can't be PR'd):

[sigmavirus24]

Ah, thanks for clarifying and raising the issue. Fixed it. 🎉