Replace git.openstack.org URLs by opendev.org URLs

Change-Id: I4f9a11daad8eaeabc16f008649c3184b987599c3

doc/source/admin/install/install_ubuntu.rst

@@ -185,7 +185,7 @@ Install and configure Qinling components
 
       # apt install -y python-pip
       # cd /var/lib/qinling
-      # git clone https://git.openstack.org/openstack/qinling.git
+      # git clone https://opendev.org/openstack/qinling.git
       # chown -R qinling:qinling qinling
       # cd qinling
       # pip install -e .

doc/source/contributor/development-environment-devstack.rst

@@ -95,7 +95,7 @@ Here are several things you could customize:
 
     .. code-block:: console
 
-        enable_plugin qinling-dashboard https://git.openstack.org/openstack/qinling-dashboard
+        enable_plugin qinling-dashboard https://opendev.org/openstack/qinling-dashboard
 
     .. end
 
@@ -137,4 +137,4 @@ set up during devstack installation.
 
 Qinling devstack script uses `kubeadm <https://kubernetes.io/docs/setup/independent/create-cluster-kubeadm/>`_
 for Kubernetes installation, refer to ``tools/gate/kubeadm/setup_gate.sh`` for
-more detailed information about Qinling devstack installation.
+more detailed information about Qinling devstack installation.