[trails] Fix name

vrobbler/apps/trails/models.py

@@ -74,6 +74,9 @@ class Trail(ScrobblableMixin):
         max_length=10, choices=ActivityType.choices, **BNULL
     )
 
+    def __str__(self):
+        return self.title
+
     def get_absolute_url(self):
         return reverse("trails:trail_detail", kwargs={"slug": self.uuid})