chore: update sponsorship link for supported regions

[clarencepenz]

Why:

closes: issue 36553

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

• Updated sponsorship link for supported regions

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.

[github-actions]

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Table of review links

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The table shows the files in the content directory that were changed in this pull request. This helps you review your changes on the review server. Changes to the data directory are not included in this table.

Source	Review	Production	What Changed
sponsors/receiving-sponsorships-through-github-sponsors/setting-up-github-sponsors-for-your-organization.md	fpt ghec	fpt ghec	from reusable
sponsors/receiving-sponsorships-through-github-sponsors/setting-up-github-sponsors-for-your-personal-account.md	fpt ghec	fpt ghec	from reusable

Key: fpt: Free, Pro, Team; ghec: GitHub Enterprise Cloud; ghes: GitHub Enterprise Server

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[jc-clark]

LGTM! I can go ahead and merge this. Thanks for updating this @clarencepenz ✨

[clarencepenz]

Always a pleasure @jc-clark 🚀

[github-actions]

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