fix contributing

Author: Rokt33r

contributing.md

@@ -11,6 +11,6 @@ But I want to make only one thing sure.
 **If you make a pull request, It means you agree to transfer the copyright of the code changes to MAISIN&CO.**
 
 This is because our team want to have an option to change LICENSE of this app.
-> It doesn't mean Boostnote will become a paid app. If we want to earn some money, We will try other ways, some kind of cloud storage or Mobile app integration.
+> It doesn't mean Boostnote will become a paid app. If we want to earn some money, We will try other way, which is some kind of cloud storage or Mobile app integration.
 > We thought this is needed to replace the license with much freer one(like BSD, MIT).