Added patch note for fixing bug 335

--HG--
branch : SDL-1.2
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/branches/SDL-1.2%402399

docs.html

@@ -80,6 +80,9 @@ SDL 1.2.12 is a minor bug fix release.
 <H3> Windows Notes </H3>
 
 <BLOCKQUOTE>
+<P>
+	The GDI video driver makes better use of the palette in 8-bit modes.
+</P>
 <P>
 	The windib driver now supports more mouse buttons with WM_XBUTTON events.
 </P>