avoid return value ambiguity

Author: Liam310

Sprint-2/3-mandatory-implement/1-bmi.js

@@ -6,14 +6,14 @@
 
 // squaring your height: 1.73 x 1.73 = 2.99
 // dividing 70 by 2.99 = 23.41
-// Your result will be displayed to 1 decimal place, for example 23.4.
+// Your result will be displayed to 1 decimal place, for example '23.4'.
 
 // You will need to implement a function that calculates the BMI of someone based off their weight and height
 
 // Given someone's weight in kg and height in metres
 // Then when we call this function with the weight and height
-// It should return their Body Mass Index to 1 decimal place
+// It should return a string of their Body Mass Index to 1 decimal place
 
 function calculateBMI(weight, height) {
-    // return the BMI of someone based off their weight and height
-}
+  // return the BMI of someone based off their weight and height
+}