Add trans femme as subterm

Usage: "Non binary people who adopt or prefer a femme presentation but who do not have a binary gender may describe themselves as *trans femme*."

_site/index.html

@@ -234,6 +234,7 @@
 				<li>Tawhid</li>
 				<li>Trans Exclusionary Radical Feminist (TERF)</li>
 				<li>Trans</li>
+				<li class="subterm">femme</li>
 				<li class="subterm">gender</li>
 				<li class="subterm">man</li>
 				<li class="subterm">masculine</li>	
@@ -500,4 +501,4 @@
 	</div>
 </main>
 </body>
-</html>
+</html>