Add a source for "ark moment"

Author: jpeterbaker

homeworlds/site/glossary.html

@@ -100,9 +100,11 @@ <h2>
     Imagining that the game is about the destruction of an actual world,
     this is when the inhabitants might try to load a few people or things onto an
     "ark" spacecraft in an effort to preserve their species or a record of their culture.
-    This term does not appear in Pyramid Quartet,
-    but Andy uses it in Homeworlds Theater
-    (I'd like to include a link to a specific moment. Let me know if you find it.)
+    <br>
+    I don't remember if Andy ever explained "arks" in his podcast
+    or if I heard him explain in a conversation.
+    The only recorded use of this term--that I know of, besides my own uses--is in Homeworlds Theater Episode 3
+    (at <a href='https://www.youtube.com/watch?v=ZAIn7kDugGE&t=1963s'>32:45</a>).
 
 <li> <a name='attack'/><u>Attack</u>
     <font size='1'>[<a href='#attack'>link</a>]</font><br>