fixed linter errors

algorithms/JavaScript/src/arrays/single-occurring-element.js

@@ -1,10 +1,11 @@
-// Problem: Given an array of integers, every element appears twice except for one. Find that single one.
+// Problem: Given an array of integers, 
+// every element appears twice except for one. Find that single one.
 // Space Complexity: O(1)
 // Time Complexity: O(n)
 
 function singleOccurringElement(arr) {
   let result = 0;
-    for(let el of arr) {
+  for (const el of arr) {
       result ^= el;
   }
   return result;