docs : fix typo

Author: sepandhaghighi

README.md

@@ -205,7 +205,7 @@ You can fork the repository, improve or fix some part of it and then send the pu
 Remember to write a few tests for your code before sending pull requests. 
 
 
-##License
+## License
 
 <a href="https://github.com/Moduland/orangetool/blob/master/LICENSE"><img src="https://img.shields.io/github/license/mashape/apistatus.svg"/></a>