Missing documentation: "hmyv2_getValidatorInformationByBlockNumber"

[Severino]

I noticed that there is only a "hmy_getAllValidatorInformationByBlockNumber" documented, which seemed weird to me.
So I tried out to query the endpoint:
hmyv2_getValidatorInformationByBlockNumber

This endpoint is complemented but not documented.
I would add the documentation but I know that there is also this site
that is like the working example of the topic:
https://api.hmny.io/?version=latest

Where would be an appropriate place to create a PR to include "hmyv2_getValidatorInformationByBlockNumber"?