fixed Error in trade method in Parser

src/ch/zhaw/catan/Parser.java

@@ -73,7 +73,7 @@ public class Parser {
         if (!give){
             output = "receive";
         }
-        return textIO.newEnumInputReader(Config.Resource.class).read("Which Resource would you like to " + give );
+        return textIO.newEnumInputReader(Config.Resource.class).read("Which Resource would you like to " + output );
     }
 }