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MINOR: [Docs] Use ' and remove trailing spaces in basic_arrow.rst (#39989)

### Rationale for this change

basic_arrow.rst had two minor issues:
- It used `’` (U+2019) instead of `'`
- While editing, I found it wasn't whitespace normalized

### What changes are included in this PR?

- `’` replaced with `'`
- Whitespace has been normalized

### Are these changes tested?

No

### Are there any user-facing changes?

Just docs.

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