docs(find-expression): correct grammar

subjects/find-expression/README.md

@@ -2,25 +2,22 @@
 
 ### Instructions
 
-Create a function called `findExpression` that takes a number as parameter and returns a string
-
-- It will be given two constant variable `add4` and `mul2`
-
-- Your goal is to try to find a sequence, starting from the number 1, and repeatedly either adding 4 or multiplying 2
-  that produces the number given has parameter.
-  For example, the number 8 you must first multiplying by 2 twice and then add 4.
-  It will look something like this `1 *2 *2 +4`
+Create a function named `findExpression` that takes a `number` as parameter and returns a `string`.
 
+- 2 constant variables will be made available to your function: `add4` and `mul2`.
+- Your goal is to try to find a sequence, starting from the number 1, and repeatedly either adding 4 or multiplying by 2, to produce the number given as a parameter.
 - If the number can not be reached you should return `undefined`
 
+For example, for the number `8`, you must first multiply by 2 twice, and then add 4. Your function should return something like: `1 *2 *2 +4`.
+
 ### Notions
 
-- [nan-academy.github.io/js-training/examples/loops.js](https://nan-academy.github.io/js-training/examples/loops.js)
-- [nan-academy.github.io/js-training/examples/recursion.js](https://nan-academy.github.io/js-training/examples/recursion.js)
+- [Loops](https://nan-academy.github.io/js-training/examples/loops.js)
+- [Recursion](https://nan-academy.github.io/js-training/examples/recursion.js)
 
 ### 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
 const add4 = '+4'