Improve menu and link title and consistency

A few page names were changed and menu link (titles) were changed too.
By page names it means either DESCRIPTION or HEADER_2 in
bin/md2html.cfg. Although it looks better and is more consistent, there
might be one or two that can be further improved.

Naturally every html file that is markdown based was updated.

2020/ferguson2/index.html

@@ -68,13 +68,13 @@
 
             <div class="outfit-font">
               <a href="../../authors.html" class="sub-item-link">
-                People who have won
+                Winning Authors
               </a>
             </div>
 
             <div class="outfit-font">
               <a href="../../location.html" class="sub-item-link">
-                Location of authors
+                Location of winning  authors
               </a>
             </div>
 
@@ -144,7 +144,7 @@
 
             <div class="outfit-font">
               <a href="../../faq.html#fix_author" class="sub-item-link">
-                Fixing author info
+                Updating author info
               </a>
             </div>
           </div>
@@ -182,7 +182,7 @@
 
             <div class="outfit-font">
               <a href="../../markdown.html" class="sub-item-link">
-                IOCCC markdown
+                IOCCC markdown guidelines
               </a>
             </div>
           </div>
@@ -228,7 +228,7 @@
             </a>
 
             <a class="mobile-submenu-item" href="../../authors.html">
-              People who have won
+              Authors of winning IOCCC entries
             </a>
 
             <a class="mobile-submenu-item" href="../../location.html">