Update README.md

Author: codingseb

README.md

@@ -69,7 +69,7 @@ It already allow to evaluate some small scripts.
 If you don't want an another .dll file in your project, you only need to copy one [C# file](./CodingSeb.ExpressionEvaluator/ExpressionEvaluator.cs) in your project. And it's [MIT licence](./LICENSE.md)
 
 ### Donate
-Expression Evaluator is free and will always be.
+Expression Evaluator is free and will always be.  
 But if you want to say thanks for this lib with a donation or small sponsoring here you can :  
 [Donate](https://www.paypal.com/donate?hosted_button_id=7K467U3H4NVJG)