Remove typo

Same as title

Author: aki-mizu

1-js/04-object-basics/09-object-toprimitive/article.md

@@ -226,7 +226,7 @@ As we know already, many operators and functions perform type conversions, e.g.
 
 If we pass an object as an argument, then there are two stages of calculations:
 1. The object is converted to a primitive (using the rules described above).
-2. If the necessary for further calculations, the resulting primitive is also converted.
+2. If necessary for further calculations, the resulting primitive is also converted.
 
 For instance: