Update CSVEncoder.

Author: gk-brown

kilo-client/src/main/java/org/httprpc/kilo/io/CSVEncoder.java

@@ -132,7 +132,7 @@ private void encode(Iterable<?> rows, Writer writer) throws IOException {
 
             if (resourceBundle != null) {
                 try {
-                    heading = resourceBundle.getObject(key.toString());
+                    heading = resourceBundle.getObject(heading.toString());
                 } catch (MissingResourceException exception) {
                     // No-op
                 }