Add increase-serial to pdnsutil doc

Description is from `pdnsutil --help`

diff --git a/docs/manpages/pdnsutil.1.rst b/docs/manpages/pdnsutil.1.rst
index ead77b09eeb8f34ea6516123a1345fb81e3fd8ee..ac2ee9b985b11fe27d997027451b965f88fd4707 100644 (file)
--- a/docs/manpages/pdnsutil.1.rst
+++ b/docs/manpages/pdnsutil.1.rst
@@ -183,6 +183,8 @@ hash-zone-record *ZONE* *RNAME*
     This convenience command hashes the name *RNAME* according to the
     NSEC3 settings of *ZONE*. Refuses to hash for zones with no NSEC3
     settings.
+increase-serial *ZONE*
+    Increases the SOA-serial by 1. Uses SOA-EDIT.
 list-keys [*ZONE*]
     List DNSSEC information for all keys or for *ZONE*.
 list-all-zones: