Fix spacing

Author: Golfing7

Essentials/src/main/java/com/earth2me/essentials/items/transform/PluginItemTransformer.java

@@ -6,7 +6,7 @@
 public abstract class PluginItemTransformer {
     private final Plugin plugin;
 
-    public PluginItemTransformer(final Plugin thePlugin){
+    public PluginItemTransformer(final Plugin thePlugin) {
         if (thePlugin == null) {
             throw new IllegalArgumentException("Plugin cannot be null!");
         }