index.html: fix a couple of validation warnings
authorAntonio Ospite <ao2@ao2.it>
Fri, 30 Jun 2017 10:41:31 +0000 (12:41 +0200)
committerAntonio Ospite <ao2@ao2.it>
Fri, 30 Jun 2017 10:41:31 +0000 (12:41 +0200)
commit1ab5593bd44ed22726a7d7ded57182a77e74ad0a
tree9d68f8d7f660c8912d357f3e32161b5299b6f2ad
parentf0cc947a9193da41d4aa0f5c2365d1959ff4f77f
index.html: fix a couple of validation warnings

Fix warnings from the http://validator.w3.org/nu validator:

  - The banner role is unnecessary for element header.
  - The navigation role is unnecessary for element nav.
index.html