Fix bad content on Ruby Gems page

[MichaelCurrin]

https://michaelcurrin.github.io/dev-cheatsheets/cheatsheets/ruby/gems/

https://github.com/MichaelCurrin/dev-cheatsheets/blob/master/cheatsheets/ruby/gems/index.md

Other index pages don't seem affected

[MichaelCurrin]

Try update the layout or page to see what is being set as page.name

Or force the layout to only do the index flow

https://github.com/MichaelCurrin/fractal/blob/master/_layouts/page.html