message: Update hacktoberfest-hello.html
diff: <html>
  -<head>
  -</head>
  +<header><title>Hello HacktoberFest!</title></header>
  <body>
  +Hello HacktoberFest!</br>
  +Bonjour!</br>
  +Hola!</br>
  +Hallo!</br>
  +Namaste!</br>
  +Salaam!</br>
  +Konnichiwa!</br>
  +Merhaba!</br>
  +Habari!</br>
  +Ni Hau!</br>
  </body>
  </html>
  