Summary: Jamie adds Enterprise page to footer navigation

Why It Matters: The addition of a dedicated Enterprise link suggests the product is moving upmarket to target larger organizations with specific security and administrative needs.

What Changed:

• Added an "Enterprise" link to the Product section in the footer.
• Updated the "Security & Privacy" footer link URL to a more specific path.
• Changed the "iPhone" download link text to "iOS" in the footer menu.
• Removed the word "Customize" from the very bottom of the page.