Docs: fix the CI that build the doc

guides/users/Makefile

+
+all:README.html
+
+%.html:%.org 
+	emacs --batch --eval="(add-to-list 'load-path \".\") (add-to-list 'load-path \"./el\")" --eval="(require 'htmlize)" --load=emacs-org.el  \
+	  --visit=$*.org --funcall org-html-export-to-html
+
+EMACS=emacs -nw \
+     --load=htmlize.el \
+     --load=emacs-org.el  
+
+%.html2:
+	$(EMACS) --visit=$*.org --funcall org-html-export-to-html --eval "(kill-emacs)" -Q
+
+clean:
+	rm *.html
+
+
+

guides/users/README.org

@@ -411,6 +411,14 @@ opam update
 opam upgrade
 #+END_SRC
 
+In order to install the tools mentionned in this documentation that
+can be used with =sasa= (namely, =gnuplot-rif=, =sim2chro=,
+=luciole-rif=, =lutin=, =lurette=, =rdbg=):
+#+BEGIN_SRC  sh :tangle sh/install-opam.sh :noweb yes  :tangle-mode (identity #o444)
+opam depext -y rdbg lutin
+opam install -y rdbg lutin
+#+END_SRC
+
 * More 
 
 - Releases Notes: https://gricad-gitlab.univ-grenoble-alpes.fr/verimag/synchrone/sasa/releases
@@ -420,3 +428,4 @@ opam upgrade
 
 ** Is there a FAQ?
 yes
+