Undo the workaround from commit 848fdf7 as no longer (since long time) needed.

Author: doublep

Eldev

@@ -157,9 +157,7 @@ be executed via `install.sh'."
   "Generate documentation HTML from Asciidoctor source."
   :command        documentation
   :aliases        (doc html-doc)
-  ;; FIXME: Uncomment after 1.3 is released, otherwise our own CI tests don't pass because of an unholy mix of
-  ;; stable and `master' code.
-  ; :category       building
+  :category       building
   (when parameters
     (signal 'eldev-wrong-command-usage `(t "Unexpected command parameters")))
   (eldev-call-process "asciidoctor" `("--backend" "html5"