Use sudo in webapp/_lib/view/500-perm.html's chown command

For consistency; to match webapp/_lib/controller/class.InstallerController.php
and webapp/_lib/class.AppUpgraderDiskUtil.php

webapp/_lib/view/500-perm.html

@@ -57,7 +57,7 @@ <h1><span id="headerthink">Think</span><span id="headerup">Up</span></h1>
 	style="float: left; margin: .3em 0.3em 0 0;"></span> <b>Oops!</b> ThinkUp is unable
 to run because of incorrect folder permissions.<br /><br />
 To fix this problem, run<br />
-<code>chown -R #WHOAMI# #COMPILE_DIR#</code><br />
+<code>sudo chown -R #WHOAMI# #COMPILE_DIR#</code><br />
 on your server, using root (or sudo), and then reload this page to continue.<br /><br />
 If you don't have root access, use the following command instead:<br />
 <code>chmod -R 777 #COMPILE_DIR#</code><br />
@@ -70,4 +70,4 @@ <h1><span id="headerthink">Think</span><span id="headerup">Up</span></h1>
 
 </body>
 
-</html>
+</html>