docs(cytale_cipher) correct grammar

subjects/scytale_cipher/README.md

@@ -2,49 +2,38 @@
 
 ### Instructions
 
-Create a function called `scytale_cipher` that takes a `string` and an `integer` and returns a `string`.
-This function should create a scytale cipher also known as spartan cipher. In practice its a cylinder with a
-strip strapped around it on which is written a message, when removed the strip the message is coded.
-Depending on the size of the cylinder the message would change. So the only way to decipher the coded message is
-by using a cylinder of the same size.
+Create a **function** which creates a scytale cipher (also known as spartan cipher).
 
-You function should recreate the scytale cipher, the string being the message and the size being the number of
-straps in the cylinder.
+In practice, it is represented by a strip wrapped around a cylinder. The message is written across the loops of the strip (not along the strip). The message becomes *coded* if the radius of the cylinder changes, or the strip is removed from the cylinder.
+
+Your function should recreate the scytale cipher, so that the `String` represents the message, and the `u32` represents the number of times the strip is wrapped around the cylinder.
 
 ### Example
 
-message : "scytale Code"
-size : 6
+**size 6:** `"scytale Code"` -> `"sec yCtoadle"`
 
 ```console
-['s', 'e']
-['c', ' ']
-['y', 'C']
-['t', 'o']
-['a', 'd']
-['l', 'e']
+--------------------------------
+  |s|  |c|  |y|  |t|  |a|  |l|
+  |e|  | |  |C|  |o|  |d|  |e|
+--------------------------------
 ```
 
-output : sec yCtoadle
-size : 8
+**size 8:** `"scytale Code"` -> `"sCcoydtea l e"`
+
 
 ```console
-['s', 'C']
-['c', 'o']
-['y', 'd']
-['t', 'e']
-['a', ' ']
-['l', ' ']
-['e', ' ']
-[' ', ' ']
+------------------------------------------
+  |s|  |c|  |y|  |t|  |a|  |l|  |e|  | |
+  |C|  |o|  |d|  |e|  | |  | |  | |  | |
+------------------------------------------
 ```
 
-output : sCcoydtea l e
-
 ### Expected Functions
 
 ```rust
-fn scytale_cipher(message: String, i: u32) -> String {}
+fn scytale_cipher(message: String, i: u32) -> String {
+}
 ```
 
 ### Usage