Use local Elisp dependencies.

--- a/docs/Makefile
+++ b/docs/Makefile
@@ -1,4 +1,8 @@
-EMACS=emacs -Q -batch -f package-initialize -L ../ -L ../../ellit-org.el -l ellit-org
+SITELISP = /usr/share/emacs/site-lisp
+BUILDDEPS = alert all-the-icons dashboard compat ellit-org esxml htmlize org \
+            rainbow-identifiers transient visual-fill-column
+BUILDDEPS:=$(BUILDDEPS:%=-L $(SITELISP)/%)
+EMACS=emacs -Q -batch -L ../ $(BUILDDEPS) -l ellit-org
 
 DOC_EL_SOURCES=../telega.el ../telega-*.el ../contrib/*.el