Fix HTML Validator warnings

www/index.html

@@ -283,7 +283,6 @@
         </li>
         <li>
           <b>Programmer's Manual</b> as HTML
-          <menu>
           <ul>
             <li>
               <a href="doc/manual.html">single document</a>
@@ -292,7 +291,6 @@
               <a href="doc/m.html">split at level-1 headers</a>
             </li>
           </ul>
-          </menu>
         </li>
         <li>
           <b>Programmer's Manual</b> as <a href=
@@ -308,7 +306,6 @@
       <ul>
         <li>X11R6 Release Notes in -ms format (<a href=
         "examples/RELNOTES.ms">source</a>)
-          <menu>
           <ul>
             <li>
               <a href="examples/rel.html">single HTML
@@ -321,7 +318,6 @@
               with automatic TOC at first page
             </li>
           </ul>
-          </menu>
         </li>
         <li>UNIX <a href="examples/pathconf.2.html">man page</a>
         with tables (<a href="examples/pathconf.2">pathconf.2</a>)
@@ -336,30 +332,25 @@
   <h2><a name="news" id="news">What's New?</a></h2>
   <p><i>January 28, 1996:</i>&nbsp; <b>Unofficial Patch with -me
   support</b></p>
-  <dl>
-    <dd>
+  <blockquote>
     George Helffrich has contributed a patch for unroff-1.0 that
-      includes, among other things, an experimental implementation
-      of a backend for the -me macros and several fixes for the
-      code that deals with equations. A detailed table of contents
-      of at the beginning of the patch kit:
+    includes, among other things, an experimental implementation of
+    a backend for the -me macros and several fixes for the code
+    that deals with equations. A detailed table of contents of at
+    the beginning of the patch kit:
     <p><a href=
     "contrib/me-misc-patch.diff"><b>me-misc-patch</b></a> <i>(39
     kbytes)</i></p>
-    </dd>
-  </dl>
+  </blockquote>
   <p><i>February 13, 1997:</i>&nbsp; <b>Another Unofficial
   Patch</b></p>
-  <dl>
-    <dd>
+  <blockquote>
     George Helffrich has contributed another large patch kit for
     unroff-1.0 that fixes several things in the -me support
     contributed earlier and in the -ms package and also adds some
     new functionality.
-      <p><a href=
-      "contrib/misc-patch-2.diff"><b>misc-patch-2</b></a> <i>(79
-      kbytes)</i></p>
-    </dd>
-  </dl>
+    <p><a href="contrib/misc-patch-2.diff"><b>misc-patch-2</b></a>
+    <i>(79 kbytes)</i></p>
+  </blockquote>
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