Update 01_loop_sum_reduce_version.js (#232)

the first parameter of the reduce function is `previousValue` and the second parameter is `currentValue` so these parameter names need to be fixed.

04_quicksort/ES6/01_loop_sum_reduce_version.js

@@ -3,6 +3,6 @@
  * @param {Array} array Array of numbers
  * @returns {number} Sum of the numbers
  */
-const sumReduce = array => array.reduce((curr, prev) => curr + prev);
+const sumReduce = array => array.reduce((prev, curr) => prev + curr);
 
 console.log(sumReduce([1, 2, 3, 4])); // 10