Update Merge_Request.md

.gitlab/merge_request_templates/Merge_Request.md

@@ -9,4 +9,9 @@ These are the most common things requested on pull requests (PRs).
  - [ ] `README.md` is updated
  - [ ] `LICENSE.md` is updated with new contributors
 
-/cc @ghenry @venkat.malladi
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+
+* [ ] **Close issue**\
+Closes #
+
+/cc @ghenry @venkat.malladi
+/assign @ghenry
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