Merge "Add docs on how to update Jenkins"

diff --cc docs/conf.py
index c5db0b5,4e6dc47..b024ff1
--- 1/docs/conf.py
--- 2/docs/conf.py
+++ b/docs/conf.py
@@@ -23,6 -23,6 +23,7 @@@ from docs_conf.conf import 
  linkcheck_ignore = [
      'http.*PROJECT_DOMAIN.*',
      'https://gerrit.linuxfoundation.org/infra/releng/docs-conf',
 +    'https://gerrit.linuxfoundation.org/infra/#/settings/http-password',
      'https://jenkins.acumos.org.*',
+     'https://jenkins.example.org.*',
  ]