plugin/proxy: fix except example
I just noticed this discrepancy in one of the `except` examples.
@@ -165,7 +165,7 @@ Proxy everything except `example.org` using the host's `resolv.conf`'s nameserve
~~~ corefile
. {
proxy . /etc/resolv.conf {
- except miek.nl example.org
+ except example.org
}
}
~~~
