Fix formatting of all HTML pages with proper indenting

[Paulinakhew]

• [x] apply to all pages
  • [x] Admin menu
  • [x] Buy and sell page
  • [x] Buy
  • [x] Contact
  • [x] Create
  • [x] Dashboard
  • [x] Leaderboard
  • [x] Login
  • [x] Lookup
  • [x] Lookup and quote
  • [x] Menu
  • [x] Quote
  • [x] Sell