Use archived links of original FamiTracker sites

hlp/main_index.htm

@@ -45,9 +45,9 @@
     <p class="text">
         This help file descibes the interface of the program and the 
         targeted sound hardware.<br />
-        There is also a wiki available with a 
-        FAQ, example songs and more information: 
-        <a href="http://www.famitracker.com/wiki/" target="new">http://www.famitracker.com/wiki/</a></p>
+        There is also a wiki available for the "vanilla" version of FamiTracker,
+        with a FAQ, example songs and more information (archived):
+        <a href="https://web.archive.org/web/20210607030302/http://famitracker.com/wiki/index.php?title=Main_Page" target="new">http://famitracker.com/wiki/index.php?title=Main_Page</a></p>
 
     <p class="text">You can always press F1 anywhere in the application to access the context sensitive help.</p>
 
@@ -92,8 +92,8 @@
             <td class="text"><a href="https://github.com/Dn-Programming-Core-Management/Dn-help" target="new">Link to Dn-Help repository</a></td>
         </tr>
 	    <tr>
-		    <td class="text"><b>FamiTracker Website:</b></td>
-		    <td class="text"><a href="http://www.famitracker.com" target="new">http://www.famitracker.com</a></td>
+		    <td class="text"><b>FamiTracker Website (archived link):</b></td>
+		    <td class="text"><a href="https://web.archive.org/web/20230415052051/http://famitracker.com/" target="new">http://www.famitracker.com</a></td>
 	    </tr>
 	    <tr>
 		    <td class="text"><b>Discord:</b></td>