llms-full.txt links to conduit.io, which no longer resolves

`llms-full.txt` contains 7 links to `https://conduit.io/...`, a domain that no longer resolves:

```
$ curl -sS --max-time 12 https://conduit.io/
curl: (7) Failed to connect to conduit.io port 443 after 161 ms: Couldn't connect to server
```

Three distinct dead URLs, at lines 118, 259, 323, 353, 373, 505 and 612 of `llms-full.txt` on
`v0.19.0`:

- `https://conduit.io/docs/using/connectors/configuration-parameters/output-format` (×5)
- `https://conduit.io/docs/connectors/output-formats`
- `https://conduit.io/docs/core-concepts#standalone-connector`

The live docs are at `conduitdata.io`, so these should be
`https://conduitdata.io/docs/using/connectors/configuration-parameters/output-format` and so on.
`llms.txt` is clean; only `llms-full.txt` is affected.

## Why it matters more now

ConduitIO/conduit-site#362 serves these files at `https://conduitdata.io/llms.txt` and
`/llms-full.txt` so agents can retrieve them without a checkout — which is the point of the
llms.txt convention. That makes `llms-full.txt` the canonical agent-facing description of Conduit,
and an agent that follows one of these links for the output-format reference gets a connection
failure.

## Where they come from

Not from `llmsgen` itself — it inlines connector specifications verbatim. The `sdk.record.format`
description carrying the ×5 link comes from `conduit-connector-sdk`; the other two come from
connector READMEs/specs. So the fix is upstream of the generator, in whichever source declares
those descriptions, and then a regeneration.

Worth considering alongside the fix: a check that fails when a generated file contains a link to a
domain we no longer serve. The generator is already drift-guarded in CI; a dead-domain assertion on
its output would be cheap and would have caught this.

Start by tracing llms-full.txt generation through llmsgen and locating the sdk.record.format description in conduit-connector-sdk; then inspect the connector READMEs or specifications that provide the other two links. Regenerate llms-full.txt and verify all seven URLs use conduitdata.io, with llms.txt unchanged. Consider the mentioned CI assertion only if its scope is clear after the link fix.

Written by the indexing model from the issue text.