Make it clear that plugins without a <Plugin /> block will still need a
LoadPlugin line.
References: #715
B<collectd> behaves. The most significant option is B<LoadPlugin>, which
controls which plugins to load. These plugins ultimately define collectd's
behavior. If the B<AutoLoadPlugin> option has been enabled, the explicit
-B<LoadPlugin> lines may be omitted.
+B<LoadPlugin> lines may be omitted for all plugins with a configuration block,
+i.e. a C<E<lt>PluginE<nbsp>...E<gt>> block.
The syntax of this config file is similar to the config file of the famous
I<Apache> webserver. Each line contains either an option (a key and a list of