Adjusted confirm text

editor/js/tools/deletetool.js

@@ -48,7 +48,7 @@ export default class DeleteTool extends Tool {
         var nodeNames = selectedNodes.map((n) => n[Graph.NODE_LABEL]);
         //! Problem: If browser is not actually showing the alerts, it always returns false!
         var shouldDelete = confirm(
-            "Do you wanna delete all these nodes:\n\n" + nodeNames.join("\n")
+            "Are you sure you want to delete all these nodes?\n\n" + nodeNames.join("\n")
         );
 
         // Delete if confirmed