docs(matrix_transposition): correct grammar

subjects/matrix_transposition/README.md

@@ -2,49 +2,29 @@
 
 ### Instructions
 
-- Define the structure matrix as a tuple of 2 tuples of 2 `i32`'s.
+- Define a `struct` named `Matrix` as a tuple of 2 tuples. The nested tuple will contain 2 `i32`s.
 
-- Define a **function** that calculates the transpose matrix of a 2x2 matrix.
+- Create a **function** named `transpose` that calculates the transposition of a 2x2 matrix.
 
-- Note:
-
-  - The transpose of a matrix `A` is the matrix `A'` where `A'`'s columns are `A`'s row and the rows are the columns:
+```rust
+pub fn transpose(m: Matrix) -> Matrix {
+}
+```
 
-Example:
+The transposition of a matrix, switches the columns to rows, and the rows to columns. For example:
 
 ```
 ( a b )   __ transposition __>   ( a c )
 ( c d )                          ( b d )
 ```
 
-- Matrix must implement Debug, PartialEq and Eq. You can use derive.
-
-- Remember that you are defining a library so you have to make public the elements that are going to be called from an external crate.
-
-### Notions
-
-- [Defining a struct](https://doc.rust-lang.org/stable/book/ch05-01-defining-structs.html)
-
-- [The Tuple Type](https://doc.rust-lang.org/stable/book/ch03-02-data-types.html?highlight=accessing%20a%20tuple#compound-types)
-
-- [Tuples](https://doc.rust-lang.org/rust-by-example/primitives/tuples.html)
-
-- [Tuple Structs without Named Fields](https://doc.rust-lang.org/stable/book/ch05-01-defining-structs.html?highlight=tuple#using-tuple-structs-without-named-fields-to-create-different-types)
-
-- [Adding Useful Functionality with Derived Traits](https://doc.rust-lang.org/stable/book/ch05-02-example-structs.html?highlight=debug%20deriv#adding-useful-functionality-with-derived-traits)
-
-- [Chapter 7](https://doc.rust-lang.org/stable/book/ch07-03-paths-for-referring-to-an-item-in-the-module-tree.html)
+`Matrix` must implement `Debug`, `PartialEq` and `Eq`. You can use `derive`.
 
-### Expected Function
-
-```rust
-pub fn transpose(m: Matrix) -> Matrix {
-}
-```
+> Remember that you are defining a library, so you must make the elements that can be called from an external crate public.
 
 ### Usage
 
-Here is a posible program to test your function
+Here is a possible program to test your function
 
 ```rust
 use matrix_transposition::transpose;
@@ -65,3 +45,17 @@ Original matrix Matrix((1, 3), (4, 5))
 Transpose matrix Matrix((1, 4), (3, 5))
 $
 ```
+
+### Notions
+
+- [Defining a struct](https://doc.rust-lang.org/stable/book/ch05-01-defining-structs.html)
+
+- [The Tuple Type](https://doc.rust-lang.org/stable/book/ch03-02-data-types.html?highlight=accessing%20a%20tuple#compound-types)
+
+- [Tuples](https://doc.rust-lang.org/rust-by-example/primitives/tuples.html)
+
+- [Tuple Structs without Named Fields](https://doc.rust-lang.org/stable/book/ch05-01-defining-structs.html?highlight=tuple#using-tuple-structs-without-named-fields-to-create-different-types)
+
+- [Adding Useful Functionality with Derived Traits](https://doc.rust-lang.org/stable/book/ch05-02-example-structs.html?highlight=debug%20deriv#adding-useful-functionality-with-derived-traits)
+
+- [Chapter 7](https://doc.rust-lang.org/stable/book/ch07-03-paths-for-referring-to-an-item-in-the-module-tree.html)