style(descendappendrange): formatting header from exercise title and format text

subjects/rockandroll/README.md

@@ -1,8 +1,8 @@
-## rockandroll
+# rockandroll
 
 ### Instructions
 
-Write a function called `RockAndRoll` that takes an `int` and returns a `string`.
+Write a function called `RockAndRoll()` that takes an `int` and returns a `string`.
 
 - If the number is divisible by 2, print `rock` followed by a newline `\n`.
 - If the number is divisible by 3, print `roll` followed by a newline `\n`.