doc(tutorial): correct a dead link.
Currently, the link tutorials and howtos
in https://cubicweb.readthedocs.io/en/default/tutorials/base/conclusion/ is broken. This MR aims to solve it!
Currently, the link tutorials and howtos
in https://cubicweb.readthedocs.io/en/default/tutorials/base/conclusion/ is broken. This MR aims to solve it!