Update processing instructions spec.

Author: ThePixelDeveloper

spec/OutputSpec.php

@@ -147,8 +147,8 @@ function it_should_generate_a_sitemap_with_links()
     function it_should_write_processing_instructions()
     {
         $xml = <<<XML
-<?xml-stylesheet type="text/xsl" href="/path/to/xslt/main-sitemap.xsl"?>
 <?xml version="1.0" encoding="UTF-8"?>
+<?xml-stylesheet type="text/xsl" href="/path/to/xslt/main-sitemap.xsl"?>
 <urlset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/siteindex.xsd" xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml">
     <url>
         <loc>http://www.example.com/english/</loc>