Fix reg_list/reg_get command docs to match implementation

[pllesperance-lc]

Corrects the reg_list and reg_get entries in docs/8-reference/endpoint-commands.md to match the actual parser in legion_tasking-go/service/command_parser/command/{reg_list,reg_get}.go.

Fixes

• Positional, not a flag — both commands take the registry path as a required positional argument (arg:"required,positional"), not a --reg_path flag. reg_get's value name is likewise a positional name, not --value_name.
• Short hive prefixes — paths must start with hkcr, hkcc, hkcu, hklm, or hku (e.g. hklm\software). A long form like HKEY_LOCAL_MACHINE fails the registryHives.Exists check with INVALID_REGISTRY_PREFIX.
• Response event name — reg_list's response event is REGISTRY_LIST_REP, not REG_LIST_REP (confirmed in edr-events.md).

Stacked on #260 (which adds the reg_get docs). Base will auto-retarget to master when #260 merges.

🤖 Generated with Claude Code