'where finds it and changes' -> 'where it finds and changes it'

Was tempted to suggest something a bit wordier: "where it finds it and, in this case, changes it", but I thought this would do.

Author: paroche

1-js/06-advanced-functions/03-closure/article.md

@@ -286,7 +286,7 @@ Later, when `counter()` is called, a new Lexical Environment is created for the
 
 ![](closure-makecounter-nested-call.svg)
 
-Now when the code inside `counter()` looks for `count` variable, it first searches its own Lexical Environment (empty, as there are no local variables there), then the Lexical Environment of the outer `makeCounter()` call, where finds it and changes.
+Now when the code inside `counter()` looks for `count` variable, it first searches its own Lexical Environment (empty, as there are no local variables there), then the Lexical Environment of the outer `makeCounter()` call, where it finds and changes it.
 
 **A variable is updated in the Lexical Environment where it lives.**