minor fixes

Author: iliakan

1-js/05-data-types/05-array-methods/article.md

@@ -36,15 +36,15 @@ That's natural, because `delete obj.key` removes a value by the `key`. It's all
 
 So, special methods should be used.
 
-The [arr.splice(start)](mdn:js/Array/splice) method is a swiss army knife for arrays. It can do everything: insert, remove and replace elements.
+The [arr.splice](mdn:js/Array/splice) method is a swiss army knife for arrays. It can do everything: insert, remove and replace elements.
 
 The syntax is:
 
 ```js
-arr.splice(index[, deleteCount, elem1, ..., elemN])
+arr.splice(start[, deleteCount, elem1, ..., elemN])
 ```
 
-It starts from the position `index`: removes `deleteCount` elements and then inserts `elem1, ..., elemN` at their place. Returns the array of removed elements.
+It modified `arr` starting from the index `start`: removes `deleteCount` elements and then inserts `elem1, ..., elemN` at their place. Returns the array of removed elements.
 
 This method is easy to grasp by examples.