Change all '@PluginElement("Filters") final Filter filter' to '@PluginElement("Filter") final Filter filter'. That's "Filters" to "Filter" for Filter args (as opposed to Filter[]).

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1608978 13f79535-47bb-0310-9956-ffa450edef68
Use camel case for XML element names: "filters" -> "Filters".

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1608979 13f79535-47bb-0310-9956-ffa450edef68