Fix typo in README

Author: anatoliykmetyuk

README.md

@@ -26,7 +26,7 @@ How to Contribute
 ## Contribute Internals-related Knowledge
 If you know anything useful at all about Dotty, feel free to log this knowledge:
 
-- [📜Log the Knowledge](https://img.shields.io/badge/log-knowledge-blueviolet.svg)](https://github.com/lampepfl/dotty-knowledge/issues/new/choose)
+- [📜Log the Knowledge](https://github.com/lampepfl/dotty-knowledge/issues/new/choose)
 - [🎓More about Logging the Knowledge](https://github.com/lampepfl/dotty-knowledge/blob/master/README.md)
 
 In short, no need to make it pretty, particularly human-readable or give it a particular structure. Just dump the knowledge you have and we'll take it from there.