fix: align all lines to 2 spaces

Author: MouawiaElkhalifa

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

@@ -15,8 +15,7 @@
 // It should return their Body Mass Index to 1 decimal place
 
 function calculateBMI(weight, height) {
-    // return the BMI of someone based off their weight and height
-  let bmi = weight / (height * height);
-return Number(bmi.toFixed(1));}
-
+  const bmi = weight / (height * height);
 
+  return Number(bmi.toFixed(1));
+}