docs(cut-corners): correct grammar

subjects/cut-corners/README.md

@@ -2,25 +2,24 @@
 
 ### Instructions
 
-Create a function for each rounding math functions:
+Create some functions which behave like JavaScript's `Math` rounding functions:
 
-- round (like `Math.round`)
+- `round`: which behaves similar to `Math.round()`.
-- ceil (like `Math.ceil`)
+- `ceil`: which behaves similar to `Math.ceil()`.
-- floor (like `Math.floor`)
+- `floor`: which behaves similar to `Math.floor()`.
-- trunc (like `Math.trunc`)
+- `trunc`: which behaves similar to `Math.trunc()`.
 
-Some restrictions apply:
+> Some restrictions apply:
-
+> - You may not use strings conversion to do it
-- You may not use strings conversion to do it
+> - No bitwise operator
-- No bitwise operator
 
 ### Notions
 
-- [devdocs.io/javascript/global_objects/math](https://devdocs.io/javascript/global_objects/math)
+- [Math](https://devdocs.io/javascript/global_objects/math)
 
 ### 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
 Math.round = Math.ceil = Math.floor = Math.trunc = undefined