docs: fix archive from-immich flags

[arturict]

What changed

• use the actual archive from-immich source flags (--from-server and --from-api-key) in archive examples
• keep upload commands on their destination flags (--server and --api-key)
• fix the album examples to use the supported plural --from-albums flag

Why

The documented archive commands used destination-style flags, which Cobra rejects for archive from-immich. Copying those examples therefore failed before an archive could start.

This addresses the incorrect archive flags reported in #1353. The separate positional-arguments error in that issue is not claimed as fixed here.

Validation

• go run . archive from-immich --help (confirmed the documented archive flags match the command surface)
• invoked a complete archive example through argument parsing; it accepted every flag and reached the expected server connection attempt
• go test ./...
• git diff --check