Merge pull request #946 from stackhpc/jammy-docs

Add ubuntu jammy upgrade doc

Author: markgoddard

doc/source/operations/index.rst

@@ -11,4 +11,5 @@ This guide is for operators of the StackHPC Kayobe configuration project.
    octavia
    hotfix-playbook
    rocky-linux-9
+   ubuntu-jammy
    secret-rotation