Change domain from opencord.org to lfbroadband.org

We have moved all sites from the opencord.org domain to
lfbroadband.org (except wiki/Jira, which are now hosted on Atlassian
Cloud).

Signed-off-by: Eric Ball <eball@linuxfoundation.org>
Change-Id: I9624ae92e9c193fa2d2fac9ab30ad108a812306e
diff --git a/conf.py b/conf.py
index 009f01c..9e5de12 100644
--- a/conf.py
+++ b/conf.py
@@ -279,14 +279,14 @@
 
 # -- Options for extlinks extension ------------------------------------------
 # ..seealso: https://www.sphinx-doc.org/en/master/usage/extensions/todo.html
-#        'vhc' : 'https://gerrit.opencord.org/plugins/gitiles/voltha-helm-charts',
+#        'vhc' : 'https://gerrit.lfbroadband.org/plugins/gitiles/voltha-helm-charts',
 
 extlinks = {
     "vol-jira": ("https://lf-broadband.atlassian.net/projects/VOL/issues/%s", "jira::%s"),
     "jira-browse": ("https://lf-broadband.atlassian.net/browse/%s", "jira::%s"),
     # macros for gerrit or github URL construction
     "repo": ("https://github.com/opencord/%s", "repo::%s"),
-    "vol-ger": ("https://gerrit.opencord.org/plugins/gitiles/%s", "gerrit::%s"),
+    "vol-ger": ("https://gerrit.lfbroadband.org/plugins/gitiles/%s", "gerrit::%s"),
     "vol-git": ("https://github.com/opencord/%s", "git::%s"),
     # https://mvnrepository
     "mvn-cord": ("https://mvnrepository.com/artifact/org.opencord/%s", "mvn::%s"),