cubicweb #3161099 "About this site" page [validation pending]

Displaying the schema almost never works, I get this error:
cette ressource est introuvable

Example: Click on link "schéma" on this page:
http://www.cubicweb.org/doc/about
It points to this page which yields the above error:
http://www.cubicweb.org/doc/schema

prioritynormal
typebug
done in3.19.10
load1.000
load left0.000
closed by#5ebbaf713caf [web/wdoc] fix links
patch[web/wdoc] fix links [applied]