Update docs/backend/schemas.md

MrTango · petschki · web-flow · commit 5b80748945dd · 2023-11-02T10:14:56.000+02:00
Co-authored-by: Peter Mathis &lt;petschki@users.noreply.github.com&gt;
diff --git a/docs/backend/schemas.md b/docs/backend/schemas.md
@@ -615,7 +615,6 @@ def fields(self):
 Because how Python object construction works, giving \[\] or {}
 as a default value will make all created field values to share this same object.
 
-<http://effbot.org/zone/default-values.htm>
 
 Use value adapters instead
 
