fix misspelling of data-section-registration

[JackS9]

• JIRA Task: https://sdx-sdsc.atlassian.net/browse/PHARMA-30
• Summary of Issue: Editing email address in profile was not sending email confirmation or responding properly to a re-sent confirmation.
• Summary of Fix: There were 4 occurrences of the form attribute data-section-registration being misspelled as data-section-registation, including the JavaScript handler of the form action. Correcting the spelling appears to have fixed the problem.
• Summary of Testing: tested on personal AWS dev machine by creating new account and changing its email address successfully
• Hotfix Required? This affects all hubs, but there is an admin workaround until next rollout