Changed right to left

Author: zainh96

Ordered Set/OrderedSet.swift

@@ -82,7 +82,7 @@ public struct OrderedSet<T: Comparable> {
 
                 j = mid
 
-                // check right side of mid
+                // check left side of mid
                 while j > 0 && !(internalSet[j] < internalSet[j - 1]) {
                     if internalSet[j - 1] == item {
                         return j - 1
@@ -125,4 +125,4 @@ public struct OrderedSet<T: Comparable> {
     public func kSmallest(k: Int) -> T! {
         return k > count || k <= 0 ? nil : internalSet[k - 1]
     }
-}
+}