Add missed oxauth API parameters to docs

[yuriyz]

We have missed parameters in our docs, it's important to check docs for at least Dynamic Registration, Authorization Endpoint and Token Endpoint.

In general oxauth code can be inspected for these parameters by following patter: https://github.com/GluuFederation/oxAuth/blob//

Example for 4.1 version Dynamic registration: https://github.com/GluuFederation/oxAuth/blob/version_4.1.0/Model/src/main/java/org/gluu/oxauth/model/register/RegisterRequestParam.java

Authorization Endpoint: https://github.com/GluuFederation/oxAuth/blob/version_4.1.0/Model/src/main/java/org/gluu/oxauth/model/authorize/AuthorizeRequestParam.java

Token Endpoint: https://github.com/GluuFederation/oxAuth/blob/version_4.1.0/Server/src/main/java/org/gluu/oxauth/token/ws/rs/TokenRestWebService.java#L65