fix: issue_number does not exist (#2787)

* fix: issue_number does not exist

* fix: issue_number does not exist
diff --git a/plugins/refdiff/tasks/ref_issue_diff_calculator.go b/plugins/refdiff/tasks/ref_issue_diff_calculator.go
index 347f34b..9656cbf 100644
--- a/plugins/refdiff/tasks/ref_issue_diff_calculator.go
+++ b/plugins/refdiff/tasks/ref_issue_diff_calculator.go
@@ -67,7 +67,7 @@
 		dal.Where("refs.repo_id = ? and pull_request_issues.issue_key > 0 and (refs_commits_diffs.new_ref_id, refs_commits_diffs.old_ref_id) in ?",
 			repoId, pairList),
 		dal.Select(`refs_commits_diffs.new_ref_commit_sha as new_ref_commit_sha, refs_commits_diffs.old_ref_commit_sha as old_ref_commit_sha, 
-			pull_request_issues.issue_id as issue_id, pull_request_issues.issue_key as issue_key, 
+			pull_request_issues.issue_id as issue_id, pull_request_issues.issue_key as issue_number, 
 			refs_commits_diffs.new_ref_id as new_ref_id, refs_commits_diffs.old_ref_id as old_ref_id`),
 	)
 	if err != nil {