correct typo in comment

Former-commit-id: 601542aaecd23293e6517e85157de6c52026774d

ippisite/ippidb/models.py

@@ -341,7 +341,7 @@ class Compound(models.Model):
     @property
     def biblio_refs(self):
         """
-        return all RefCompoundBiblio related to this complex
+        return all RefCompoundBiblio related to this compound
         """
         return RefCompoundBiblio.objects.filter(compound=self)