exceptions fixed

src/gen_java_exceptions.ysl2

@@ -8,7 +8,7 @@ tstylesheet {
         | 
         | public class pEpException extends Exception { }
 
-        apply "namespace/enum[@name='pEp_status']", 0;
+        apply "namespace/exception[@name='pEp_status']", 0;
     }
 
     function "exception" {
@@ -21,7 +21,7 @@ tstylesheet {
         }
     }
 
-    template "enum" for "*[text()!=0]" call "exception"
+    template "exception" for "*[text()!=0]" call "exception"
         with "name" call "CamelCase" with "text", "name(.)";
 }