Properly update Python version requirement in the documentation

download.html

@@ -15,7 +15,7 @@
 
 <p>Note that if you directly click on these hyperlinks, your web browser will most likely display the program contents. It's usually better to right-click on it and choose the appropriate option, normally called <em>Save Target As</em> or <em>Save Link As</em>, depending on the web browser you are using.</p>
 
-<p>Remember <em>youtube-dl</em> requires <a href="http://www.python.org/">Python</a> version 2.x (x being at least 4) to work.</p>
+<p>Remember <em>youtube-dl</em> requires <a href="http://www.python.org/">Python</a> version 2.x (x being at least 5) to work.</p>
 
 <h2><a href="https://github.com/rg3/youtube-dl/raw/2011.01.30/youtube-dl">2011.01.30</a></h2>
 

download.html.in

@@ -15,7 +15,7 @@
 
 <p>Note that if you directly click on these hyperlinks, your web browser will most likely display the program contents. It's usually better to right-click on it and choose the appropriate option, normally called <em>Save Target As</em> or <em>Save Link As</em>, depending on the web browser you are using.</p>
 
-<p>Remember <em>youtube-dl</em> requires <a href="http://www.python.org/">Python</a> version 2.x (x being at least 4) to work.</p>
+<p>Remember <em>youtube-dl</em> requires <a href="http://www.python.org/">Python</a> version 2.x (x being at least 5) to work.</p>
 
 <h2><a href="@PROGRAM_URL@">@PROGRAM_VERSION@</a></h2>
 

index.html

@@ -14,7 +14,7 @@
 		<span style="font-size: x-small; font-weight: normal;">(and mores sites...)</span></td>
 </tr></table>
 
-<p><em>youtube-dl</em> is a small command-line program to download videos from YouTube.com and a few more sites. It requires the <a href="http://www.python.org/">Python interpreter</a>, version 2.x (x being at least 4), and it is not platform specific. It should work in your Unix box, in Windows or in Mac OS X. It is released to the public domain, which means you can modify it, redistribute it or use it however you like.</p>
+<p><em>youtube-dl</em> is a small command-line program to download videos from YouTube.com and a few more sites. It requires the <a href="http://www.python.org/">Python interpreter</a>, version 2.x (x being at least 5), and it is not platform specific. It should work in your Unix box, in Windows or in Mac OS X. It is released to the public domain, which means you can modify it, redistribute it or use it however you like.</p>
 
 <table border="0" id="rgb"><tr>
 	<tr><td><a class="button" id="r" href="documentation.html">Documentation</a></td></tr>