MINOR Updated required version to 5.1 in php5-required template (from…

… r100988)

git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@111559 467b73ca-7a2a-4603-9d3b-597d59a354a9

dev/install/php5-required.html

@@ -23,7 +23,7 @@ <h1>PHP 5 required</h1>
 						<h2>To run SilverStripe, please install PHP 5.0 or greater.</h2>
 
 						<p>We have detected that you are running PHP version <b>$PHPVersion</b>.  In order to run SilverStripe, 
-						you must have PHP version 5.0 or greater, and for best results we recommend PHP 5.2 or greater.</p>
+						you must have PHP version 5.1 or greater, and for best results we recommend PHP 5.2 or greater.</p>
 
 						<p>If you are running on a shared host, you may need to ask your hosting provider how to do this.</p>
 					</div>