docs(find_factorial): correct grammar

subjects/find_factorial/README.md

@@ -2,21 +2,19 @@
 
 ### Instructions
 
-Complete the **function** `factorial` to return the factorial of a given number.
-
-As a reminder the factorial of a number is the product of all the integers from 1 to that number.
-
-Example: the factorial of 6 (written 6!) is 1 \* 2 \* 3 \* 4 \* 5 \* 6 = 720.
-
-Do not forget the rules for 0 and 1.
-
-### Expected Function
+Create a **function** named `factorial` which returns the factorial of a given number.
 
 ```rust
 pub fn factorial(num: u64) -> u64 {
 }
 ```
 
+As a reminder, the factorial of a number is the product of all the integers from 1 to that number.
+
+Example: the factorial of 6 (written 6!) is 1 \* 2 \* 3 \* 4 \* 5 \* 6 = 720.
+
+> Do not forget the rules for 0 and 1.
+
 ### Usage
 
 Here is a possible program to test your function :