switch documentation job to new PTI

This is a mechanically generated patch to switch the documentation
jobs to use the new PTI versions of the jobs as part of the
python3-first goal.

See the python3-first goal document for details:
https://governance.openstack.org/tc/goals/stein/python3-first.html

Change-Id: Ief323de5c09fcff7d3b51421faa6b10dddd69a54
Story: #2002586
Task: #24327
diff --git a/.zuul.yaml b/.zuul.yaml
index fd8c265..1dbebef 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -176,8 +176,8 @@
       - openstack-python-jobs
       - openstack-python35-jobs
       - check-requirements
-      - publish-openstack-sphinx-docs
-      - release-notes-jobs
+      - publish-openstack-docs-pti
+      - release-notes-jobs-python3
     check:
       jobs:
         - patrole-admin