[fix] limiter.toml: botdetection.ip_limit turn off link_token by default

To activate the ``link_token`` method in the ``ip_limit`` method add the
following to your ``/etc/searxng/limiter.toml``::

   [botdetection.ip_limit]
   link_token = true

Related: https://github.com/searxng/searxng/pull/2357#issuecomment-1554116941
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

searx/botdetection/ip_limit.py

@@ -9,9 +9,18 @@ bot request.  This method requires a redis DB and needs a HTTP X-Forwarded-For_
 header.  To take privacy only the hash value of an IP is stored in the redis DB
 and at least for a maximum of 10 minutes.
 
-The :py:obj:`link_token` method is used to investigate whether a request is
-*suspicious*.  If the :py:obj:`link_token` method is activated and a request is
-*suspicious* the request rates are reduced:
+The :py:obj:`.link_token` method can be used to investigate whether a request is
+*suspicious*.  To activate the :py:obj:`.link_token` method in the
+:py:obj:`.ip_limit` method add the following to your
+``/etc/searxng/limiter.toml``:
+
+.. code:: toml
+
+   [botdetection.ip_limit]
+   link_token = true
+
+If the :py:obj:`.link_token` method is activated and a request is *suspicious*
+the request rates are reduced:
 
 - :py:obj:`BURST_MAX` -> :py:obj:`BURST_MAX_SUSPICIOUS`
 - :py:obj:`LONG_MAX` -> :py:obj:`LONG_MAX_SUSPICIOUS`

searx/botdetection/limiter.toml

@@ -1,3 +1,3 @@
 [botdetection.ip_limit]
 
-link_token = true
+link_token = false