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MINOR: [Dev][Docs] Fix references to archery docker run command (#42148)

### Rationale for this change

I noticed two instances where we refer to "archery run" but I think the command is "archery docker run".

```
❯ archery run
Usage: archery [OPTIONS] COMMAND [ARGS]...
Try 'archery -h' for help.

Error: No such command 'run'.
❯ archery docker run --help
Usage: archery docker run [OPTIONS] IMAGE [COMMAND]
```

### What changes are included in this PR?

Fixed two places we refer to "archery run".

### Are these changes tested?

No.

### Are there any user-facing changes?

No.

Authored-by: Bryce Mecum <petridish@gmail.com>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>