Fix test for product ref

Author: jakubwasikowski

tests/samples/schema.org/product-ref.json

@@ -32,7 +32,7 @@
             ],
             "brand": "ACME",
             "name": "Executive Anvil",
-            "description": "Sleeker than ACME's Classic Anvil, the\n      Executive Anvil is perfect for the business traveler\n      looking for something to drop from a height.",
+            "description": "Sleeker than ACME's Classic Anvil, the Executive Anvil is perfect for the business traveler looking for something to drop from a height.",
             "mpn": "925872",
             "aggregateRating": {
                 "type": "http://schema.org/AggregateRating",