Replace README.txt with README.md

Reviewed the patch #2 and tested it on Drupal version 10.1.x and Textfield Counter version 8.x-1.x. README.txt file has been replaced with new README.md. I have attached the before and after screenshots for reference. Need RTBC+1

Fixed formatting issues as per comment #3.
Please review.
Thanks

Reviewed MR#5 and verified README.md format issues. Only change noticed is the title 'Contents of this file'. As per template it should be 'Table of contents'. But I'm not sure if it needs to be changed as that section is given as optional in the template. Attached screenshot for reference. Need RTBC+1

Patch is working and marking it to RTBC.

Nupur Badola: Please don't upload screenshots of your terminal showing that a patch applies, followed by a directory listing. Anyone can observe what the automated tools does. Posting a screenshot of it here just adds noise to the issue.

Before an issue can be marked RTBC the changes need to be manually reviewed, this wasn't done.

Please read up on Issue Etiquette → . Pay attention on #11 and #14 on the "Don't" list.

Your comment here is spam and you've been tagged as a spammer. I'm setting the status back to "Needs review".