docs(box_recursion) correct grammar

subjects/box_recursion/README.md

@@ -2,21 +2,14 @@
 
 ### Instructions
 
-Using the given code create the following **functions**:
+Using the given code, create the following **associated functions**:
 
-- `new` which will initialize the `WorkEnvironment` as `None`
-- `add_worker`, which receives two strings, one being the type of worker and the other the name of the worker.
-- `remove_worker`, which removes the last worker that was placed in the `WorkEnvironment`, this function should
-  returns an `Option` with the name of the worker.
-- `search_worker`, which returns a tuple with the name and type of worker.
+- `new`: which will initialize the `WorkEnvironment` with `grade` set to `None`.
+- `add_worker`: which receives two strings, one being the type of worker and the other the name of the worker.
+- `remove_worker`: which removes the last worker that was placed in the `WorkEnvironment`, this function returns an `Option` with the name of the worker.
+- `search_worker`: which returns a tuple with the name and type of worker.
 
-You must also create a type called `Link`. This will be the connection of the structures `WorkEnvironment` and `Worker`.
-Do not forget that this will be a recursion type and it must point to `None` if there is no workers.
-
-### Notions
-
-- [boc](https://doc.rust-lang.org/book/ch15-01-box.html)
-- [Module std::option](https://doc.rust-lang.org/std/option/)
+You must also create a type named `Link`. This will be the connection between the `WorkEnvironment` and `Worker` structures. This will be a recursion type, and it must point to `None` if there is no `Worker` to point to.
 
 ### Expected Functions and structures
 
@@ -77,3 +70,8 @@ Some(("Alice", "Normal Worker"))
 WorkEnvironment { grade: None }
 $
 ```
+
+### Notions
+
+- [boc](https://doc.rust-lang.org/book/ch15-01-box.html)
+- [Module std::option](https://doc.rust-lang.org/std/option/)