erratum in Example 6 regarding behavior of key generator with in-line key (#444)

#443

Co-authored-by: Steve M. Kim <steve@goldenplum.dev>

Author: chairmank

index.bs

@@ -1789,21 +1789,14 @@ Attempting to store a property on a primitive value will fail and
 throw an error. In the first example below the [=object-store/key
 path=] for the object store is "`foo`". The actual object
 is a primitive with the value, `4`. Trying to define a
-property on that primitive value fails. The same is true for arrays.
-Properties are not allowed on an array. In the second example below,
-the actual object is an array, `[10]`. Trying to define a
-property on the array fails.
+property on that primitive value fails.
 
 ```js
 const store = db.createObjectStore("store", { keyPath: "foo", autoIncrement: true });
 
 // The key generation will attempt to create and store the key path
 // property on this primitive.
 store.put(4); // will throw DataError
-
-// The key generation will attempt to create and store the key path
-// property on this array.
-store.put([10]); // will throw DataError
 ```
 </div>