Background for details:
The doc build was together with the combination build in the nightly job, but this CI job on tf.org was failed for some while. Meanwhile, the doc link on tf.org for TF-M is dependent on the last stable nightly job.
So, the latest document was not shown since no stable nightly build after Docs updated.
We have a standalone doc build job run by nightly now, it would be have more chances to build with stable output.