auth docs: fix invalid reference

```
docs/settings.rst:1407: WARNING: undefined label: _stat-overload-drops (if the link has no caption the label must precede a section header)
```

diff --git a/docs/settings.rst b/docs/settings.rst
index 5acfc0c4b964c6112018f3aa2b81b11fff4f4dbc..43cc87d199858e26cdb977d9a8c864e065cec391 100644 (file)
--- a/docs/settings.rst
+++ b/docs/settings.rst
@@ -1406,7 +1406,7 @@ Secondary name servers.
 
 If this many packets are waiting for database attention, answer any new
 questions strictly from the packet cache. Packets not in the cache will
-be dropped, and :ref:`_stat-overload-drops` will be incremented.
+be dropped, and :ref:`stat-overload-drops` will be incremented.
 
 .. _setting-prevent-self-notification: