Fix site_path tag

bookwyrm/context_processors.py

@@ -1,5 +1,6 @@
 """ customize the info available in context for rendering templates """
 from bookwyrm import models
+from bookwyrm.settings import DOMAIN
 
 
 def site_settings(request):  # pylint: disable=unused-argument
@@ -7,4 +8,5 @@ def site_settings(request):  # pylint: disable=unused-argument
     return {
         "site": models.SiteSettings.objects.get(),
         "active_announcements": models.Announcement.active_announcements(),
+        "site_path": "https://%s" % DOMAIN,
     }