Fix display of two-person presentation teams -_-

Author: HalfWhitt

templates/macros/join_and.html

@@ -5,7 +5,7 @@
 }}{% 
     elif items|length == 2
 %}{{
-    " {} ".format(join_word).format(items)
+    " {} ".format(join_word).join(items)
 }}{%
     else
 %}{{