tutorials with slug ending in `-` return 404 error

[kheiner]

Navigate to directus.com/docs and use the search feature (⌘+K) to search for "Build a user feedback widget": I originally thought it was a search bug but it's actually just a slug bug. 🚗

You'll get a 404 to: https://directus.com/docs/tutorials/projects/build-a-user-feedback-widget-with-vue-js-

[linear-code]

EDU-531

[kheiner]

Figured it out - there's some files that end with a - in their slug and/or *.md filename. Will submit a PR for it.