#601897, your article is in draft mode and is not published. There are two options to delete your duplicate post:
Option 1 - Publish the duplicate post (article) leaving a message to the editors in the specified box, to delete the article. Editors will do the needful on seeing the message, while reviewing the articles. Make sure to leave a message in the 'message to the editors' box.
Option 2 - Replace the content and submit the article. Leave a message in the editor's box mentioning that the filename and browser title need to be changed to match the title of the article. The editors will do the needful while reviewing.
You can follow any one of the above options, whichever is feasible to you.
Thanks & Regards