Feat: Admin v2: Tweak admin password creation screen

[Asartea]

Because

• The previous iteration had a small typo and pushed a lot of text inside a h2

This PR

• Fixes the typo
• Split the second line into a span instead of the h2 and slightly rewords it

Additional Information

Pull Request Requirements

• [x] I have thoroughly read and understand The Odin Project Contributing Guide
• [x] The title of this PR follows the keyword: brief description of change format, using one of the following keywords:
  • Feature - adds new or amends existing user-facing behavior
  • Chore - changes that have no user-facing value, refactors, dependency bumps, etc
  • Fix - bug fixes
• [x] The Because section summarizes the reason for this PR
• [x] The This PR section has a bullet point list describing the changes in this PR
• [x] I have verified all tests and linters pass after making these changes.