Rename private attribute _element to _el

Change-Id: I9c7a31bd6844636737ffa6456562b997f5e370a3
diff --git a/dev/js/spec/queryCreatorSpec.js b/dev/js/spec/queryCreatorSpec.js
index 09189bc..780a7bf 100644
--- a/dev/js/spec/queryCreatorSpec.js
+++ b/dev/js/spec/queryCreatorSpec.js
@@ -702,7 +702,7 @@
 
       qc._q = document.createElement('input');
       
-      qc._element.click();
+      qc._el.click();
 
       expect(qc._ql.selectedIndex).toEqual(1);
       expect(qc._q.value).toEqual("[orth=Baum]");