Update WooPayments account modal copy

[BurakParsAydin]

Updates #10317

Changes proposed in this Pull Request

Update WooPayments account modal copy

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• Run npm run changelog to add a changelog file, choose patch to leave it empty if the change is not significant. You can add multiple changelog files in one PR by running this command a few times.
• Covered with tests (or have a good reason not to test in description ☝️)
• Tested on mobile (or does not apply)

Post merge

• Link to testing instructions from release testing doc following these instructions : Add link here / 'QA Testing Not Applicable'
• Add or update critical flows and testing instructions for critical flows, if applicable.
• Add what's changed (description, screenshot, demo videos etc.) to the release announcement post, if applicable.

[dpaun1985]

thank you for working on this @BurakParsAydin .
Looks good . I left a suggestion about the changelog.

[BurakParsAydin]

@dpaun1985 Thanks for the review. I adjusted it.