Update index.md

Author: mnot

index.md

@@ -26,8 +26,8 @@ Past HTTP Workshops include:
 * [2019 in Amsterdam, NL](https://github.com/HTTPWorkshop/workshop2019/wiki/Report)
 * [2022 in Oxford, UK](https://github.com/HTTPWorkshop/workshop2022/blob/main/report.md)
 
-**The [2024 HTTP Workshop](https://github.com/HTTPWorkshop/workshop2024/blob/main/README.md) will be held in November.**
-
+The [2024 HTTP Workshop](https://github.com/HTTPWorkshop/workshop2024/blob/main/README.md) will be held in November.
+{:.banner}
 
 ## Who Should Come