This docstring has been like this a long time, but recently I noticed
sphinx-doc complaining about :man:. This :any: link seems to work, and
is consistent with the other links to the notmuch-config man page.
"""The decryption policy.
This is an enum from the :class:`DecryptionPolicy`. See the
- `index.decrypt` section in :man:`notmuch-config` for details
+ `index.decrypt` section in :any:`notmuch-config(1)` for details
on the options. **Do not set this to
:attr:`DecryptionPolicy.TRUE`** without considering the
security of your index.