compare to a fractional number

Otherwise `5.111111111` will not be equals to `5.11` and the same for `5.222222222`

Author: abernier

tests/functions-and-arrays.spec.js

@@ -175,9 +175,9 @@ describe('Bonus: Calculate the average of a mixed elements array', () => {
 
   it('should return the average of the array', () => {
     // false is counted as 0
-    expect(avg([6, 12, 'miami', 1, 'barca', '200', 'lisboa', 8, false])).toBe(5.11);
+    expect(avg([6, 12, 'miami', 1, 'barca', '200', 'lisboa', 8, false])).toBe(46/9);
     // true is counted as 1
-    expect(avg([6, 12, 'miami', 1, 'barca', '200', 'lisboa', 8, true])).toBe(5.22);
+    expect(avg([6, 12, 'miami', 1, 'barca', '200', 'lisboa', 8, true])).toBe(47/9);
   });
 });