be more specific about not reducing cfg memory

Author: andreer

en/operations-selfhosted/docker-containers.html

@@ -281,7 +281,7 @@ <h2 id="memory">Memory</h2>
   are tweaked to the minimum for a functional test only.
 </p>
 {% include important.html content="For production use,
-do not set <code>VESPA_CONFIGSERVER_JVMARGS</code> and <code>VESPA_CONFIGPROXY_JVMARGS</code>
+do not reduce memory settings in <code>VESPA_CONFIGSERVER_JVMARGS</code> and <code>VESPA_CONFIGPROXY_JVMARGS</code>
 unless you know what you are doing -
 the Vespa defaults are set for regular production use, and rarely need changing."%}
 <p>