doc/start: update "apt install" command in documenting-ceph.rst

Signed-off-by: caolei <cao.leilc@inspur.com>

diff --git a/doc/start/documenting-ceph.rst b/doc/start/documenting-ceph.rst
index 5b38b16c8cc23450135d8f57e86e1f47605e10c1..6c1b4130f7de066eec0077e159d80aba6d537e06 100644 (file)
--- a/doc/start/documenting-ceph.rst
+++ b/doc/start/documenting-ceph.rst
@@ -352,7 +352,7 @@ distributions, execute the following:
 .. prompt:: bash $
 
        sudo apt-get install gcc python-dev python3-pip libxml2-dev libxslt-dev doxygen graphviz ant ditaa
-       sudo apt-get install python-sphinx
+       sudo apt-get install python3-sphinx python3-venv
 
 For Fedora distributions, execute the following: