Link not working: Follow instructions to update the Template Host app.

Hello there,
thanks for the readme.
The last line of readme:
`Follow instructions to update the Template Host app.`
leads to
`https://developer.android.com/training/cars/apps/automotive-os`
which says:
`Sorry, we couldn't find that page.`

Start in the README at the final line, “Follow instructions to update the Template Host app.” Verify the linked Android Automotive OS destination and replace the broken URL with the current instructions. Done means the README link opens a valid page describing how to update the Template Host app.

Written by the indexing model from the issue text.