README link to #views-template has extra dash in it.

Hello! Please see PR #322 ; I'm creating this ticket so that I can reference it in the PR.

https://github.com/sinatra/sinatra.github.com/blob/main/_includes/README.html#L330 is where the issue is; navigation to this anchor is currently broken. 

#322 provides the fix.

Thanks! 

# 😎 