docs: correct CLI command forms and targeted typos

[robekl]

Summary

Targeted command accuracy and typo/grammar fixes in docs/cli_commands.md.

Changes

• Corrected admin password command documentation:
  • from get password / set password <password>
  • to password <new_password>.
• Corrected GPS advert policy value:
  • from shared
  • to share.
• Marked set freq <frequency> as serial-only.
• Fixed spelling/grammar issues:
  • epoc -> epoch
  • sotrage -> storage
  • Referr -> Refer.

Implementation References

• src/helpers/CommonCLI.cpp
  • CommonCLI::handleCommand
  • password command handler
  • gps advert policy parser (none / share / prefs)
  • serial-only guard pattern (sender_timestamp == 0) for set freq
• examples/simple_repeater/MyMesh.cpp
  • repeater wrapper commands (setperm, get acl, discover.neighbors)
• examples/simple_room_server/MyMesh.cpp
  • room wrapper commands (setperm, get acl)