docs: add manual page for verification.cfg

docs/config/verification/format.rst

@@ -0,0 +1,16 @@
+Each entry starts with a header ``verification: <name>``, followed by the
+job configuration options.
+
+::
+
+  verification: verify-store2
+	ignore-verified true
+	outdated-after 7
+	schedule daily
+	store store2
+
+  verification: ...
+
+
+You can use the ``proxmox-backup-manager verify-job`` command to manipulate
+this file.

docs/config/verification/man5.rst

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+==========================
+verification.cfg
+==========================
+
+.. include:: ../../epilog.rst
+
+-------------------------------------------------------------
+Verification Job Configuration
+-------------------------------------------------------------
+
+:Author: |AUTHOR|
+:Version: Version |VERSION|
+:Manual section: 5
+
+Description
+===========
+
+The file /etc/proxmox-backup/sync.cfg is a configuration file for
+Proxmox Backup Server. It contains the verification job
+configuration.
+
+
+File Format
+===========
+
+.. include:: format.rst
+
+
+Options
+=======
+
+.. include:: config.rst
+
+
+.. include:: ../../pbs-copyright.rst