Fixed typo.

Author: John Doe

doc/en/function/scopes.md

@@ -206,7 +206,7 @@ this problem can easily be avoided with the help of *anonymous wrappers*.
 
 
 Unnamed functions are considered [expressions](#function.general); so in order to
-being callable, they must first be evaluated.
+be callable, they must first be evaluated.
 
     ( // evaluate the function inside the parentheses
     function() {}