Fix ipsec host2host document

Signed-off-by: Gris Ge <fge@redhat.com>

Author: cathay4t

devel/yaml_api.md

@@ -1591,10 +1591,10 @@ The `libreswan` section, nmstate provides these properties:
  * `psk`: String. The Pre-Shared-Key. Please consider to use x509/PKI
    authentication in production system. In query, this property will be
    shown as `<_password_hid_by_nmstate>` for security concern.
- * `rightsubnet`: String. Please explicitly set it when using in host-to-host
-   mode.
- * `leftmodecfgclient`: yes|no. Please explicitly set it to `no` when using in
-   host-to-host mode.
+ * `rightsubnet`: String. Please explicitly set it to /32 or /128 IP when using
+   in host-to-host mode.
+ * `leftmodecfgclient`: true|false. Please explicitly set it to `false` when
+   using in host-to-host mode.
  * `type`: `transport` or `tunnel`. The `tunnel` is the default value if not
    defined.