Update contact form success banner

[britneywwc]

Done

• Format files with djlint (mainly what's causing the large diff)
• Change form submission redirect from #success to #contact-form-success
• Shows the correct message: Thank you for contacting our team. We will be in touch shortly. as seen in the forms copy doc

QA

• Go to demos: /solutions/ai, /solutions/secure-open-source, /solutions/big-data-ai
• Click on Contact Canonical and submit form
• On form submission success, check that url has #contact-form-success and is showing the correct notification banner (in screenshot below)
  • Forms copy docs: secure-open-source, ai
  • Form copy docs for big-data-ai does not specify a confirmation banner message, but changed for consistency

Issue / Card

Fixes WD-11848

Screenshots

[webteam-app]

Demo

Jenkins

demos.haus