Images assets are not properly displayed

See how i added this image in the post on my fork : 
https://github.com/Kraymer/sample-jekyll/commit/a18e21b933c3450fc5ff4c4017d7e16f51ec5951

And the result :  
https://king-prawn-app-tmyrp.ondigitalocean.app/jekyll/update/2020/04/16/welcome-to-jekyll.html