Add method to submit bugs for site

[bencodezen]

There should be an easy way for people to file issues for the site

[lastlink]

shouldn't it just be a link to submit issues here?

[bencodezen]

@lastlink Thanks for the PR! I should have been more explicit. There's a configuration in VuePress that allows you to automatically generate a link to each page https://vuepress.vuejs.org/theme/default-theme-config.html#git-repo-and-edit-links

It's great for submitting PRs, but falls short of filing an issue if people don't have the technical ability to do so.