Merge pull request ceph#63328 from bluikko/doc-fix-certmgr-cephadm

doc/cephadm: Fix automodule generation in certmgr.rst

Reviewed-by: Redouane Kachach <[email protected]>

Author: zdover23

doc/cephadm/certmgr.rst

@@ -90,7 +90,7 @@ Known Certificates and Keys
 The `CertMgr` class maintains a list of known certificates and keys. These are
 automatically documented below:
 
-.. automodule:: mgr.cephadm.certmgr
+.. automodule:: mgr.cephadm.cert_mgr
    :members: known_certs, known_keys
    :undoc-members:
    :show-inheritance: