Extraneous comment in adv3 periplus about.html

docs/adv3/about.html

@@ -35,7 +35,7 @@ <h2>Introduction</h2>
   <p>
     This periplus organizes the adv3 library by topics and subject matter.
     Its goal is to make it easier to locate information on particular subjects when crafting
-    a TADS 3 game.  Much of the information is also useful to writers using the adv3 system.
+    a TADS 3 game.
   </p>
   <p>
     <b>This is neither a complete adv3 class reference nor a TADS 3 programmer's guide.</b>