Links in Comments get appended by dev.to's URL #4101

Describe the bug When I clicked on the link to the leanpub in the comment of article Your First Year In Code: Now Available In Print! by Issac it redirected me to https://dev.to/isaacdlyman/comment/leanpub.com/firstyearincode instead of https://leanpub.com/firstyearincode. Just to confirm also created a test article here with a test comment which seems to be having the same issue!

Getting hit by dev.to's 404 Page instead.

base-21348764b2d6ec27daf94a953246cd11e24aac20da16f75fca16b9ff96b994a8.js:70 GET https://dev.to/amorpheuz/github.com/amorpheuz?i=i 404
XMLHttpRequest.send @ base-21348764b2d6ec27daf94a953246cd11e24aac20da16f75fca16b9ff96b994a8.js:70
w @ base-21348764b2d6ec27daf94a953246cd11e24aac20da16f75fca16b9ff96b994a8.js:111
m @ base-21348764b2d6ec27daf94a953246cd11e24aac20da16f75fca16b9ff96b994a8.js:111 

The element seems to be coded correctly <a href="github.com/amorpheuz" rel="nofollow">github.com/amorpheuz</a>

To Reproduce

1. Go to here
2. Click on the test link in the comment.
3. Hit by 404 Page.

Expected behavior Should open the link correctly without appending dev.to.

Screenshots

Desktop (please complete the following information):

• OS: Windows 10
• Browser: Google Chrome
• Version: 77.0.3865.90 (Official Build) (64-bit)

Smartphone (please complete the following information):

• Device: Nokia 6.1
• OS: Android 9
• Browser: Google Chrome
• Version: 77.0.3865.90

Additional context