[Docs] Fix CSS for visibility of the version dropdown #30450
Description
A small follow-up on ARROW-14499, where I didn't properly test the visibility of the dropdown menu (only the placing of the button)
Reporter: Joris Van den Bossche / @jorisvandenbossche
Assignee: Joris Van den Bossche / @jorisvandenbossche
PRs and other links:
Note: This issue was originally created as ARROW-14926. Please see the migration documentation for further details.