Describe the bug
Including underscores in titles blocks users from posting articles. They receive the error message: Slug is Invalid.

To Reproduce
Steps to reproduce the behavior:

1. Go to https://dev.to/new
2. Write a post with a title that includes an underscore "_"
3. Set published to trure
4. Save the post

Expected behavior
Articles should be able to save with titles including underscores.

Screenshots