Merge branch 'timeline-warning' into 'main'

add warning box

See merge request infra/static-pages/camp2023-infos!61

docs/timeline.md

@@ -25,9 +25,9 @@ If you want to arrive earlier than August, 15 you are expected to help with buil
 
 To keep track of the number of people on place please register with the orga or the angelsystem if you want to help during buildup.
 
-**DO NOT ARRIVE BEFORE THE ANNOUNCED DATES**
 
-We simply do not have the infrastructure to support many people early on. There won't be enought toilets, no showers, no power, no water and no food or anything else needed to stay. We need space to operate heavy machinery and those do not mix well with squishy humans. You will be asked to leave.
+!!! danger "**DO NOT ARRIVE BEFORE THE ANNOUNCED DATES**"
+	We simply do not have the infrastructure to support many people early on. There won't be enought toilets, no showers, no power, no water and no food or anything else needed to stay. We need space to operate heavy machinery and those do not mix well with squishy humans. You will be asked to leave.
 
 ### Kids