For standard run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:tiwai:kernel:5.18/standard/home:tiwai:kernel:5.18.repo
zypper refresh
zypper install kernel-docs
For S390 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:tiwai:kernel:5.18/S390/home:tiwai:kernel:5.18.repo
zypper refresh
zypper install kernel-docs
For RISCV run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:tiwai:kernel:5.18/RISCV/home:tiwai:kernel:5.18.repo
zypper refresh
zypper install kernel-docs
For PPC run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:tiwai:kernel:5.18/PPC/home:tiwai:kernel:5.18.repo
zypper refresh
zypper install kernel-docs
For ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:tiwai:kernel:5.18/ARM/home:tiwai:kernel:5.18.repo
zypper refresh
zypper install kernel-docs