refactor: improve slack message readability

Author: McPatate

issue-bot/src/slack.rs

@@ -59,8 +59,8 @@ impl Slack {
         closest_issues: &[ClosestIssue],
     ) -> Result<(), SlackError> {
         let mut msg = vec![format!(
-            "Closest issues for {} (<{}|#{}>):\n```{}```",
-            issue.title, issue.html_url, issue.number, issue.body
+            "Closest issues for <{}|#{}>:```{}`\n---\n{}```",
+            issue.html_url, issue.number, issue.title, issue.body
         )];
         for ci in closest_issues {
             msg.push(format!("- {} (<{}|#{}>)", ci.title, ci.html_url, ci.number));