Clarify Codespaces billing for forks (#45373)

Co-authored-by: Sharra-writes <sharra-writes@github.com>

Author: SR0725

data/reusables/codespaces/when-an-org-pays.md

@@ -1,3 +1,3 @@
 * The organization has no budget defined for {% data variables.product.prodname_github_codespaces %} or has set a non-zero budget.
-* The codespace is created from one of the organization's repositories, or from a fork of one of the organization's repositories. This includes {% ifversion ghec %}public, private, and internal{% elsif fpt %}both public and private{% endif %} repositories.
+* The codespace is created from one of the organization's repositories, or from an organization-owned fork of a repository. This includes {% ifversion ghec %}public, private, and internal{% elsif fpt %}both public and private{% endif %} repositories.
 * The user creating the codespace is a member or collaborator of the organization, and the organization has enabled {% data variables.product.prodname_github_codespaces %} for this user. This can include all members and collaborators if the organization has chosen to enable {% data variables.product.prodname_codespaces %} for all users. If {% data variables.product.prodname_codespaces %} isn't enabled for a user, they can still create codespaces from public repositories in the organization, but the user will pay for these codespaces.