Fix type in plugin config. Thanks to Felix Knecht for the fix

git-svn-id: https://svn.apache.org/repos/asf/james/jspf/trunk@1074451 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index d46366e..19b5475 100644
--- a/pom.xml
+++ b/pom.xml
@@ -83,7 +83,7 @@
 	        <artifactId>maven-pmd-plugin</artifactId>
 	        <version>2.4</version>
 	        <configuration>
-	          <targetjdk>1.4</targetjdk>
+	          <targetJdk>${target.jdk}</targetJdk>
 	          <rulesets>
 	            <ruleset>/rulesets/basic.xml</ruleset>
 	            <ruleset>/rulesets/controversial.xml</ruleset>