docs: align supported-source table

[mm65x]

Summary

• align the supported-source table with the implemented telemetry discovery
• document the JSONL format and remove the stale stub marker

Verification

• cargo fmt -- --check
• cargo test
• cargo clippy -- -W clippy::pedantic -A clippy::module_name_repetitions
• cargo build --release

Fixes #37

[mm65x]

Review

No blocking findings.

• The change is limited to the linked documentation issue and accurately updates the source row to match the implemented parser.
• The format description and discovery location are consistent with the current source implementation.
• The patch does not alter runtime behavior or configuration.
• Format, clippy, Linux, macOS, and Windows CI checks all pass.

Merge recommendation

Ready after the draft is marked ready and an independent reviewer records approval. This account authored the PR, so GitHub will not allow it to self-approve.