fix

files/pxe/pxe-menus/ubuntu.ipxe

@@ -13,7 +13,7 @@ clear older_release
 set install_type deb
 menu ${os} - ${arch_a}
 item --gap Latest Releases
-item jemmy ${space} ${os} 22.04 LTS Jemmy Jellyfish
+item jammy ${space} ${os} 22.04 LTS Jammy Jellyfish
 item focal ${space} ${os} 20.04 LTS Focal Fossa
 item bionic ${space} ${os} 18.04 LTS Bionic Beaver
 item xenial ${space} ${os} 16.04 LTS Xenial Xerus
@@ -21,7 +21,7 @@ item --gap Older Releases
 item older_release ${space} Set release codename...
 choose ubuntu_version || goto ubuntu_exit
 iseq ${ubuntu_version} older_release && goto older_release ||
-iseq ${ubuntu_version} jemmy && set install_type sub ||
+iseq ${ubuntu_version} jammy && set install_type sub ||
 iseq ${ubuntu_version} focal && set install_type sub ||
 iseq ${boot_type} sub && goto boot_type ||
 goto mirrorcfg
@@ -75,9 +75,9 @@ echo MD5sums:
 md5sum linux initrd.gz
 boot
 
-:jemmy
+:jammy
 set kernel_url http://${boot_domain}/ubuntu-squash/22.04-fa8aca48/
-set codename jemmy
+set codename jammy
 set version_number 22.04
 goto sub_boot