Dead link in DE "Boolesche Variablen mit Bedacht einsetzen"

[JoachimRees]

There is a dead link ( "Mehr zu diesem Thema erfahren Sie in 1" -> http://www.beyondcode.org/articles/booleanVariables.html -> 404) in DE: https://github.com/SAP/styleguides/blob/main/clean-abap/CleanABAP_de.md#boolesche-variablen-mit-bedacht-einsetzen

(in the EN section,
https://github.com/SAP/styleguides/blob/main/clean-abap/CleanABAP.md#use-booleans-wisely there is no such link) .