docs: prefer lowercase html tags

Signed-off-by: Brian Paul <brianp@vmware.com>
diff --git a/docs/systems.html b/docs/systems.html
index 7b1d348..9999751 100644
--- a/docs/systems.html
+++ b/docs/systems.html
@@ -48,14 +48,14 @@
 Additional driver information:
 </p>
 
-<UL>
+<ul>
 <li><a href="http://dri.freedesktop.org/" target="_parent"> DRI hardware
 drivers</a> for the X Window System
 <li><a href="xlibdriver.html">Xlib / swrast driver</a> for the X Window System
 and Unix-like operating systems
 <li><a href="README.WIN32">Microsoft Windows</a>
 <li><a href="vmware-guest.html">VMware</a> guest OS driver
-</UL>
+</ul>
 
 
 <h1>