Changed a word in article.md

Change the phrase "a property" to "the property" in line 57 (`Here the line (*) sets animal to be a prototype of rabbit.`) because it made it sound like an object can inherit more than one prototype at a time.

Author: yasledesma

1-js/08-prototypes/01-prototype-inheritance/article.md

@@ -54,7 +54,7 @@ alert( rabbit.eats ); // true (**)
 alert( rabbit.jumps ); // true
 ```
 
-Here the line `(*)` sets `animal` to be a prototype of `rabbit`.
+Here the line `(*)` sets `animal` to be the prototype of `rabbit`.
 
 Then, when `alert` tries to read property `rabbit.eats` `(**)`, it's not in `rabbit`, so JavaScript follows the `[[Prototype]]` reference and finds it in `animal` (look from the bottom up):