docs: use latest libDRM version

Signed-off-by: Brian Paul <brianp@vmware.com>
diff --git a/docs/install.html b/docs/install.html
index ae911d5..8b349c4 100644
--- a/docs/install.html
+++ b/docs/install.html
@@ -73,8 +73,7 @@
 <ul>
 <li><a href="http://xorg.freedesktop.org/releases/individual/proto/">
 dri2proto</a> version 2.6 or later
-<li><a href="http://dri.freedesktop.org/libdrm/">libDRM</a>
-version 2.4.33 or later
+<li><a href="http://dri.freedesktop.org/libdrm/">libDRM</a> latest version
 <li>Xorg server version 1.5 or later
 <li>Linux 2.6.28 or later
 </ul>