I missed converting `integrations-overview.md` since it was a file in
`api_docs` without realising that we had a symlink in help/ that pointed
to that file. I'm not sure how the other two files were missed but we
corrrect here nonetheless.
We have a few files where we have blank lines before tables and tips, we
need these blank lines for the current help center to render those
tables and tips properly. But those same blank lines make the list loose
when converted to MDX. We cannot make these changes before we have the
ability to modify MDX directly. We track this issue in #35533.