docs(slicer): correct grammar

subjects/slicer/README.md

@@ -2,17 +2,17 @@
 
 ### Instructions
 
-Create the `slice` function that works like `Array.slice` and `String.slice`
+Create a function named `slice` that works like `Array.slice()` and `String.slice()`.
 
-It takes an additional first argument which is the string or the array
+It takes an additional first argument which is the string or the array.
 
 ### Notions
 
-- [devdocs.io/javascript/global_objects/array/slice](https://devdocs.io/javascript/global_objects/array/slice)
+- [Array.slice](https://devdocs.io/javascript/global_objects/array/slice)
 
 ### Code provided
 
-> all code provided will be added to your solution and doesn't need to be submited.
+> The provided code will be added to your solution, and does not need to be submitted.
 
 ```js
 Array.prototype.slice = undefined