Fix: update packages url as well

Author: lwasser

_data/navigation.yml

@@ -11,7 +11,7 @@ main:
         url: "/partners.html"
       - title: "Accepted packages"
         icon:
-        url: "/python-packages/"
+        url: "/python-packages.html"
       - title: "Peer review guide"
         url: "https://www.pyopensci.org/software-peer-review/"
         icon: "fas fa-external-link-alt"