Add command to disable xymon highlights

documentation/weechat.markdown

@@ -150,5 +150,8 @@ You can easily save it with the script `buffer_autoset.py`:
 ```
 /script install buffer_autoset.py
 /help autosetbuffer
+# highlight all messages in channel `isgphys`
 /autosetbuffer add irc.phys.#isgphys highlight_regex .*
+# no hilights in channel `monitoring` by nick `xymon`
+/autosetbuffer add irc.phys.#monitoring hotlist_max_level_nicks_add xymon:0
 ```