Docs issue with OAuth2 refresh token endpoint

The docs for the OAuth API appear to be incorrect regarding how to use a refresh token to get a new access token:

https://docs.digitalocean.com/reference/api/oauth/#refresh

The docs say to use the endpoint ending in /refresh but that endpoint appears to always return a 200 with a huge blob of HTML in the response, as if it is not a real API endpoint. I have tried a lot of variations (different request methods, GET parameters vs POST body, including client_id/secret or not, including the refresh token as a bearer token, etc.) and none of them seem to work.

I have found that the endpoint that actually works is just to call /token instead, as described here:

https://www.oauth.com/oauth2-servers/making-authenticated-requests/refreshing-an-access-token/

Was not sure where else to report this.