fix binary search typo (trekhleb#1079)

Co-authored-by: Oleksii Trekhleb <[email protected]>

Author: ir3ne

src/algorithms/search/binary-search/binarySearch.js

@@ -11,7 +11,7 @@ import Comparator from '../../../utils/comparator/Comparator'
 
 exportdefaultfunctionbinarySearch(sortedArray,seekElement,comparatorCallback){
 // Let's create comparator from the comparatorCallback function.
-// Comparator object will give us common comparison methods like equal() and lessThen().
+// Comparator object will give us common comparison methods like equal() and lessThan().
 constcomparator=newComparator(comparatorCallback);
 
 // These two indices will contain current array (sub-array) boundaries.