Error while enabling only 1 repo of an org to Cloudflare pages

### Existing documentation URL(s)

https://developers.cloudflare.com/pages/configuration/git-integration/github-integration/

It is mentioning the flows of authorizing a single repository under an organization, but even when github organization admin attempts to allow a single repository access while creating new pages project he ends up on github app configuration page.

It feels like a bug on Cloudflare side and documentation doesn't clarify how to actually get through the connection even after we clearly see that github Cloudflare app has access to a repo and has all the correct rights

### What changes are you suggesting?

Clarify the flow to connecting a github repo, when initiator doesn't have global org rights and need to request them from the github org admin.
Also clarify the exact flow for allowing only a single repo access vs access on the whole org level.

### Additional information

_No response_