Correct note on naming to match reality.

Per discussion on -core and -hackers.

Author: dpage

templates/pages/about/licence.html

@@ -7,7 +7,7 @@ <h1>License <i class="far fa-file-alt"></i></h1>
 
 <p>
   PostgreSQL Database Management System<br />
-  (formerly known as Postgres, then as Postgres95)
+  (also known as Postgres, formerly as Postgres95)
 </p>
 <p>
   Portions Copyright &copy; 1996-{% now "Y" %}, The PostgreSQL Global Development Group