Merge pull request nzakas#362 from ronen-e/patch-1

Fix typo - use correct name reference

Author: nzakas

manuscript/06-Symbols.md

@@ -308,10 +308,10 @@ let collection = {
 let messages = [ "Hi" ].concat(collection);
 
 console.log(messages.length);    // 3
-console.log(messages);           // ["hi","Hello","world"]
+console.log(messages);           // ["Hi","Hello","world"]
 ```
 
-The `collection` object in this example is set up to look like an array: it has a `length` property and two numeric keys. The `Symbol.isConcatSpreadable` property is set to `true` to indicate that the property values should be added as individual items to an array. When `collection` is passed to the `concat()` method, the resulting array has `"Hello"` and `"world"` as separate items after the `"hi"` element.
+The `collection` object in this example is set up to look like an array: it has a `length` property and two numeric keys. The `Symbol.isConcatSpreadable` property is set to `true` to indicate that the property values should be added as individual items to an array. When `collection` is passed to the `concat()` method, the resulting array has `"Hello"` and `"world"` as separate items after the `"Hi"` element.
 
 I> You can also set `Symbol.isConcatSpreadable` to `false` on array subclasses to prevent items from being separated by `concat()` calls. Subclassing is discussed in Chapter 8.