[Content Migration Flow] Fix typo in notifications prompt

[twstokes]

Fixes #19871

Note: This was cut from the 21.4 tag in case we want to include it on upcoming hotfixes.

Testing

Follow steps outlined in the issue: #19871

Regression Notes

1. Potential unintended areas of impact

• None

2. What I did to test those areas of impact (or what existing automated tests I relied on)

• None

3. What automated tests I added (or what prevented me from doing so)

• None

PR submission checklist:

• I have completed the Regression Notes.
• I have considered adding unit tests for my changes.
• I have considered adding accessibility improvements for my changes.
• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

[twstokes]

@salimbraksa I'm not sure if this will be included in the hotfix yet, so I'll keep it as a draft for now. If you wouldn't mind reviewing I'd appreciate it. 🙇

[wpmobilebot]

You can test the changes in WordPress from this Pull Request by:

• Clicking here or scanning the QR code below to access App Center
• Then installing the build number pr19878-f3b9ac2 on your iPhone

If you need access to App Center, please ask a maintainer to add you.

[wpmobilebot]

You can test the changes in Jetpack from this Pull Request by:

• Clicking here or scanning the QR code below to access App Center
• Then installing the build number pr19878-f3b9ac2 on your iPhone

If you need access to App Center, please ask a maintainer to add you.

[salimbraksa]

@twstokes Thanks for fixing this typo. LGTM! 🚀