admin/build-doc: use python3 (follow-on fix)

Unfortunately, 7bf20b587eee45391af6828a2d2414f8bd5c1a4c (first attempt to
cherry-pick ace8cb15a600daf5261c0ab349b43010a238a1d9 to luminous) was
incomplete.

Signed-off-by: Nathan Cutler <ncutler@suse.com>
(partial manual cherry-pick of ace8cb15a600daf5261c0ab349b43010a238a1d9)

diff --git a/doc_deps.deb.txt b/doc_deps.deb.txt
index d1cbb344b2654dad6394308406c1f37547cb172f..318be6e2286cc29f00c24a6a11045814376f33d9 100644 (file)
--- a/doc_deps.deb.txt
+++ b/doc_deps.deb.txt
@@ -10,4 +10,4 @@ libxslt1-dev
 graphviz
 ant
 zlib1g-dev
-cython
+cython3