docs: readme tweaks

Author: erunion

README.md

@@ -4,8 +4,6 @@ Transform a [FormData](https://developer.mozilla.org/en-US/docs/Web/API/FormData
 
 [![Build](https://github.com/readmeio/formdata-to-string/workflows/CI/badge.svg)](https://github.com/readmeio/formdata-to-string/) [![](https://img.shields.io/npm/v/formdata-to-string)](https://npm.im/formdata-to-string)
 
-[![](https://d3vv6lp55qjaqc.cloudfront.net/items/1M3C3j0I0s0j3T362344/Untitled-2.png)](https://readme.io)
-
 ## Installation
 
 ```sh