updated readme

README.md

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+[![Commit rate](https://img.shields.io/github/commit-activity/m/Anarios/return-youtube-dislike?label=Commits)](https://github.com/Anarios/return-youtube-dislike/commits/main)
+[![Issues](https://img.shields.io/github/issues/Anarios/return-youtube-dislike)](https://github.com/Anarios/return-youtube-dislike/issues)
+[![License](https://img.shields.io/badge/License-GPLv3-blue.svg)](https://github.com/Anarios/return-youtube-dislike/blob/main/LICENSE)
+[![Mozilla Add-ons](https://img.shields.io/amo/rating/return-youtube-dislikes?label=Firefox)](https://addons.mozilla.org/en-US/firefox/addon/return-youtube-dislikes/)
+
 # Return YouTube Dislike
 
 <p align="center">
@@ -9,7 +14,7 @@
 
 ## The Story
 
-On November 10th, 2021, Google [announced](https://blog.youtube/news-and-events/update-to-youtube/) that the YouTube dislike count would be removed.  
+On November 10th, 2021, Google [announced](https://blog.youtube/news-and-events/update-to-youtube/) thathe YouTube dislike count would be removed.  
   
 Additionally, the `dislike` field in the YouTube API will be [removed](https://support.google.com/youtube/thread/134791097/update-to-youtube-dislike-counts) on December 13th, 2021, removing any ability to judge the quality of content before watching.
 
@@ -24,4 +29,3 @@ and estimates based on view\like ratios.
 
 You can learn more at our website at: [returnyoutubedislike.com](https://www.returnyoutubedislike.com/)
 
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