Improve styling in help message

src/notification_listing.rs

@@ -54,8 +54,8 @@ pub async fn render(db: &DbClient, user: &str) -> String {
         out.push_str("</ol>");
 
         out.push_str(
-            "<p><em>You can acknowledge notifications by sending <code>ack &lt;idx&gt;</code> \
-            to <b>@triagebot</b> on Zulip. Read about the other notification commands \
+            "<p><em>You can acknowledge notifications by sending </em><code>ack &lt;idx&gt;</code><em> \
+            to </em><strong><code>@triagebot</code></strong><em> on Zulip. Read about the other notification commands \
             <a href=\"https://forge.rust-lang.org/platforms/zulip/triagebot.html#issue-notifications\">here</a>.</em></p>"
         );
     }