Update README.md

Update screenshot provided by @kip-13

Author: roymckenzie

README.md

@@ -7,7 +7,7 @@ A Google Chrome extension that detects zero-width characters on a page, highligh
 Install [the extension](https://chrome.google.com/webstore/detail/detect-zero-width-charact/icibkhaehdofmcbfjfpppogioidkilib) from the Chrome Web Store.
 
 ## Screenshot
-![Paragraph with offending zero-space characters in it.](http://image.ibb.co/bQNFux/tom_foolery.png)
+![Paragraph with offending zero-space characters in it.](https://image.ibb.co/gfPcKx/screenshot.png)
 
 ## License