Correct billing manager instructions

[Aupajo]

Why:

To correct instructions that direct users towards links and sections that have different names (“Billing managers“ is now under “Additional billing details”):

What's being changed (if available, include any code snippets, screenshots, or gifs):

The final steps for adding a billing manager now reflect the current naming of links and sections.

Check off the following:

• A subject matter expert (SME) has reviewed the technical accuracy of the content in this PR. In most cases, the author can be the SME. Open source contributions may require an SME review from GitHub staff.
• The changes in this PR meet the docs fundamentals that are required for all content.
• All CI checks are passing and the changes look good in the review environment.

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Source	Review	Production	What Changed
organizations/managing-peoples-access-to-your-organization-with-roles/adding-a-billing-manager-to-your-organization.md	fpt ghec	fpt ghec

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[Copilot]

Pull Request Overview

This PR updates the documentation steps to match the renamed UI section when adding a billing manager to an organization.

• Replace “Billing management” step with “Additional billing details”
• Change “Add” action to “Invite” next to “Billing managers”
• Align instructions with the current UI labels

Comments suppressed due to low confidence (1)

content/organizations/managing-peoples-access-to-your-organization-with-roles/adding-a-billing-manager-to-your-organization.md:66

• Indent this list item to match the surrounding nested list under the reusable snippet so it renders correctly as a sub-step.

1. Click **Additional billing details**.

[Copilot]

[nitpick] Use sequential numbering (e.g., 2.) for this step to improve clarity, unless relying on Markdown's automatic numbering.

Suggested change

	1. Next to "Billing managers", click **Invite**.
	1. Type the username or email address of the person you want to add and click **Send invitation**.
	2. Next to "Billing managers", click **Invite**.
	3. Type the username or email address of the person you want to add and click **Send invitation**.

[Sharra-writes]

@Aupajo Thanks for opening a PR! The thing about the billing menu change is that it hasn't had a universal rollout yet. It's a headache, I know. This isn't the way the Docs team would have preferred to see it done, since it leaves our documentation in limbo, but it's not our call. I have an internal tracking issue for all of the issues/PRs raised in the OS repo to make sure nothing is overlooked when we roll out the new documentation, so I'm going to close this but add it to my internal issue.

I'm really sorry about the confusion, and I hope the menu change becomes universal soon so we can document it properly.