why do i not have a normal menu on my various wiki-paeges in the right sideblock!?

[fsj-digital]

good day dear github-experts,

first of all: i really love github.

currently i am diving into the technique of wiki - and i want to add wiki to my project page-:

why do i not have a normal menu on my various wiki-paeges in the right sideblock!?

look at the map - i allways thougth that whenever i add a page then this would automatically be added to the menu - on the sideblock on the right

see this image - and yes: in generall it looks like so

see here: https://github.com/fsj-digital/DigitalHub/wiki

well i wonder why this is not the case.

look forward to hear from you - have a great day