move docs in the right directories

content/docs/learn-more/st/_index.md

content/docs/learn-more/st/tpm/_index.md

content/docs/learn-more/st/tpm/stboot-measurements.md

content/docs/reference/_index.md

content/docs/reference/cmdline/_index.md

content/docs/reference/data-structures/_index.md

content/docs/reference/data-structures/endorsev0.md

content/docs/reference/data-structures/host_configuration.md

content/docs/reference/data-structures/os_package.md

...ent/docs/reference/data-structures/stboot-opkg-channel.md

content/docs/reference/data-structures/trust_policy.md

content/docs/reference/protocols/_index.md

content/docs/reference/protocols/enrollv0.md

content/docs/reference/protocols/quotev0.md