Update report_from_ubo.yml

.github/ISSUE_TEMPLATE/report_from_ubo.yml

@@ -14,7 +14,7 @@ body:
           required: true
         - label: I read and understand the [policy about what is a valid filter issue](https://github.com/uBlockOrigin/uAssets/blob/master/README.md#uassets).
           required: true
-        - label: I verified that this issue is not a duplicate. (Search [here](https://github.com/uBlockOrigin/uAssets/issues) to find out.)
+        - label: I verified that this issue is not a duplicate. (Search [here](https://github.com/uBlockOrigin/uAssets/issues) to find out.). Comment in the old issue threads even when they are closed.
           required: true
         - label: I did not remove any of the [default filter lists](https://github.com/user-attachments/assets/1879fc88-09bc-4de4-9e2f-3834a6ab396a), or I have verified that the issue was not caused by removing any of the default lists.
           required: true