docs: fix venv path "share/share"

Wrong venv path
/path/to/venv/share/share/kolla-ansible/init-runonce
added in
https://review.opendev.org/c/openstack/kolla-ansible/+/816074



Signed-off-by: Adrian Andreias <adrian@fleio.com>
Change-Id: Icf4d804416723308e6e1c2bbf2b8636032eb16ca
Signed-off-by: Adrian Andreias <adrian@fleio.com>

doc/source/user/quickstart.rst

@@ -568,7 +568,7 @@ Using OpenStack
 
      .. code-block:: console
 
-        /path/to/venv/share/share/kolla-ansible/init-runonce
+        /path/to/venv/share/kolla-ansible/init-runonce
 
      If not using a virtual environment: