change callout number

Author: SNiemann15

modules/install-sno-ibm-z.adoc

@@ -163,7 +163,7 @@ zfcp.allow_lun_scan=0 \
 rd.luks.options=discard
 ----
 <1> For the `ignition.config.url=` parameter, specify the Ignition file for the machine role. Only HTTP and HTTPS protocols are supported.
-<1> For the `coreos.live.rootfs_url=` artifact, specify the matching `rootfs` artifact for the `kernel`and `initramfs` you are booting. Only HTTP and HTTPS protocols are supported.
+<2> For the `coreos.live.rootfs_url=` artifact, specify the matching `rootfs` artifact for the `kernel`and `initramfs` you are booting. Only HTTP and HTTPS protocols are supported.
 <3> For the `ip=` parameter, assign the IP address automatically using DHCP or manually as described in "Installing a cluster with z/VM on {ibm-z-name} and {ibm-linuxone-name}".
 <4> For installations on DASD-type disks, use `rd.dasd=` to specify the DASD where {op-system} is to be installed. Omit this entry for FCP-type disks.
 <5> For installations on FCP-type disks, use `rd.zfcp=<adapter>,<wwpn>,<lun>` to specify the FCP disk where {op-system} is to be installed. Omit this entry for DASD-type disks.