message: remove incorrect pr number reference
diff: @@ -20,7 +20,6 @@ async function gitlabPullRequestClosed(webhook: WebhookRequestData, project: Pro
  projectName: project.name,
  pullrequestNumber: body.object_attributes.id,
  pullrequestTitle: body.object_attributes.title,
  - pullrequestNumber: body.number,
  pullrequestUrl: body.object_attributes.url,
  repoName: body.object_attributes.target.name,
  repoUrl: body.object_attributes.target.web_url,
  