Fix wording for 'fold' description

Author: svtk

src/ii_collections/n22Fold.kt

@@ -12,8 +12,8 @@ fun whatFoldDoes(): Int {
     return result
 }
 
-fun Shop.getSetOfProductsOrderedByEveryCustomer(): Set<Product> {
-    // Return the set of products ordered by every customer
+fun Shop.getSetOfProductsOrderedByEachCustomer(): Set<Product> {
+    // Return the set of products that were ordered by each of the customers
     return customers.fold(allOrderedProducts, {
         orderedByAll, customer ->
         todoCollectionTask()

test/ii_collections/N22FoldKtTest.kt

@@ -17,6 +17,6 @@ class N22FoldKtTest {
                         order(youTrack)
                 )
         )
-        assertEquals(setOf(idea), testShop.getSetOfProductsOrderedByEveryCustomer())
+        assertEquals(setOf(idea), testShop.getSetOfProductsOrderedByEachCustomer())
     }
 }