change license

Author: AlbertoMontalesi

README.md

@@ -39,4 +39,4 @@ If you enjoy my content and you want to donate me a cup of coffee, you can do [h
 
 ## License
 
-This book is licensed under a [Creative Commons Attribution 4.0 - cc-by-4.0](https://creativecommons.org/licenses/by/4.0/)
+<a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-nc-nd/3.0/88x31.png" /></a><br />This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/">Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License</a>.

ebook/01_var_let_const.md

@@ -62,7 +62,7 @@ console.log(y);
 // expected output: block-scoped
 ```
 
-As you can see, when we assigned a new value to our `let` inside our block-scope it **did not** change the value in the global scope, wherease when did the same with our `var` it leaked outside of the block-scope and also change it in the global scope.
+As you can see, when we assigned a new value to our `let` inside our block-scope it **did not** change the value in the global scope, whereas when did the same with our `var` it leaked outside of the block-scope and also change it in the global scope.