Claude review: drm/connector: Fix epoch_counter docs to reflect reality

[Claude Code Review Bot <claude-review@example.com>]

Patch Review

**Reviewed-by worthy.** This is a straightforward documentation fix.

The old doc says:
```c
/** @epoch_counter: used to detect any other changes in connector, besides status */
```

The new doc says:
```c
/**
 * @epoch_counter: Used to detect changes in connector. Increased when
 * the connector, including its status, is changed.
 */
```

This is correct. Looking at the code in `drm_probe_helper.c`, `check_connector_changed()` calls `drm_helper_probe_detect()` which updates the epoch counter when status changes, so the old "besides status" wording was wrong since introduction. The `Fixes:` tag pointing to the original commit is appropriate for a doc fix.

No issues.

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