Added info for extra-headers option (#20763)

* Added info for extra-headers option

Added info for extra-headers option

* Typo

Changed - to _

* Update src/current/v25.4/create-changefeed.md

another typo

Co-authored-by: Miles Frankel <[email protected]>

---------

Co-authored-by: Miles Frankel <[email protected]>

Author: peachdawnleach

src/current/v25.4/create-changefeed.md

@@ -121,6 +121,7 @@ Option | Value | Description
 <a name="end-time"></a>`end_time` | [Timestamp]({% link {{ page.version.version }}/as-of-system-time.md %}#parameters) | Indicate the timestamp up to which the changefeed will emit all events and then complete with a `successful` status. Provide a future timestamp to `end_time` in number of nanoseconds since the [Unix epoch](https://wikipedia.org/wiki/Unix_time). For example, `end_time="1655402400000000000"`. You cannot use `end_time` and [`initial_scan = 'only'`](#initial-scan) simultaneously.
 <a name="envelope"></a>`envelope` | `wrapped` / `enriched` / `bare` / `key_only` / `row` | `wrapped` the default envelope structure for changefeed messages containing an array of the primary key, a top-level field for the type of message, and the current state of the row (or `null` for deleted rows).<br><br>Refer to the [Changefeed Message Envelopes]({% link {{ page.version.version }}/changefeed-message-envelopes.md %}) page for more detail on each envelope.<br><br>Default: `envelope=wrapped`. Default for [CDC-queries]({% link {{ page.version.version }}/cdc-queries.md %}): `envelope=bare`.
 <a name="execution-locality"></a>`execution_locality` | Key-value pairs | Restricts the execution of a changefeed to nodes that match the defined locality filter requirements, e.g., `WITH execution_locality = 'region=us-west-1a,cloud=aws'`. <br><br>See [Run a changefeed job by locality]({% link {{ page.version.version }}/changefeeds-in-multi-region-deployments.md %}#run-a-changefeed-job-by-locality) for usage and reference detail.
+<a name="extra_headers"></a>`extra_headers` | [`json`]({% link {{ page.version.version }}/string.md %}) | Specifies extra headers for [webhook sinks]({% link {{ page.version.version }}/changefeed-sinks.md %}#webhook-sink) and [kafka sinks]({% link {{ page.version.version }}/changefeed-sinks.md %}#kafka). Use this option to add headers to all messages sent to the sink. <br><br>Example: `CREATE CHANGEFEED FOR foo WITH extra_headers='{"x-api-key": "xxx", "some-other-header": "yyy"}'`
 <a name="format"></a>`format` | `json` / `avro` / `csv` / `parquet` | Format of the emitted message. <br><br>`avro`: For mappings of CockroachDB types to Avro types, [refer-to-the-table]({% link {{ page.version.version }}/changefeed-messages.md %}#avro-types) and detail on [Avro-limitations]({% link {{ page.version.version }}/changefeed-messages.md %}#avro-limitations). **Note:** [`confluent_schema_registry`](#confluent-schema-registry) is required with `format=avro`. <br><br>`csv`: You cannot combine `format=csv` with the [`diff`](#diff) or [`resolved`](#resolved) options. Changefeeds use the same CSV format as the [`EXPORT`](export.html) statement. Refer to [Export-data-with-changefeeds]({% link {{ page.version.version }}/export-data-with-changefeeds.md %}) for details using these options to create a changefeed as an alternative to `EXPORT`. **Note:** [`initial_scan = 'only'`](#initial-scan) is required with `format=csv`. <br><br>`parquet`: Cloud storage is the only supported sink. The [`topic_in_value`](#topic-in-value) option is not compatible with `parquet` format.<br><br>Default: `format=json`.
 <a name="full-table-name"></a>`full_table_name` | N/A | Use fully qualified table name in topics, subjects, schemas, and record output instead of the default table name. This can prevent unintended behavior when the same table name is present in multiple databases.<br><br>**Note:** This option cannot modify existing table names used as topics, subjects, etc., as part of an [`ALTER CHANGEFEED`]({% link {{ page.version.version }}/alter-changefeed.md %}) statement. To modify a topic, subject, etc., to use a fully qualified table name, create a new changefeed with this option. <br><br>Example: `CREATE CHANGEFEED FOR foo... WITH full_table_name` will create the topic name `defaultdb.public.foo` instead of `foo`.
 <a name="gc-protect-expires-after"></a>`gc_protect_expires_after` | [Duration string](https://pkg.go.dev/time#ParseDuration) | Automatically expires protected timestamp records that are older than the defined duration. In the case where a changefeed job remains paused, `gc_protect_expires_after` will trigger the underlying protected timestamp record to expire and cancel the changefeed job to prevent accumulation of protected data.<br><br>Refer to [Protect-Changefeed-Data-from-Garbage-Collection]({% link {{ page.version.version }}/protect-changefeed-data.md %}) for more detail on protecting changefeed data.