docs: fix incorrect sample code

Author: kenjis

user_guide_src/source/outgoing/view_parser/008.php

@@ -4,8 +4,8 @@
     'blog_title'   => 'My Blog Title',
     'blog_heading' => 'My Blog Heading',
     'blog_entry'   => [
-        'title' => 'Title 1',
-        'body'  => 'Body 1',
+        ['title' => 'Title 1'],
+        ['body' => 'Body 1'],
     ],
 ];