missing documentation

I just installed the WordPress plugin Papercite.

When I click “Documentation” I get a 404. looking at the directories, the file is not present. /wp-content/plugins/papercite/documentation/index.html

Found a copy at https://web.archive.org/web/20180728231228/https://www.bpiwowar.net/wp-content/plugins/papercite/documentation/index.html

Can you update the plugin?

Thanks in advance for your time.