Fix leaderboard users after mixup during poise port

src/utils.rs

@@ -370,7 +370,7 @@ pub async fn leaderboard(ctx: &PrefixContext<'_>) -> Result<(), Error> {
     let mut leaderboard_html = String::from("<table id=\"leaderboard\">");
     for (i, (id, count)) in top_submitters[0..LENGTH].iter().enumerate() {
         let place = i + 1;
-        let user = &ctx.msg.author;
+        let user = serenity::UserId(id.parse::<u64>().unwrap()).to_user(&ctx.discord.http).await?;
         let avatar = get_avatar(&user);
         let profile = format!("https://discord.com/users/{id}");
         let name = &user.name;