[Website] Update documentations for 14.0, 15.0 and dev

[AlenkaF]

This change tries to fix the errors in the versions warning bar and versions switcher. See apache/arrow#39737

[AlenkaF]

The commands that were run:

alenkafrim@Alenkas-MacBook-Pro docs % find . -iname "*.html" | xargs sed -i '' 's/DOCUMENTATION_OPTIONS.show_version_warning_banner = true/DOCUMENTATION_OPTIONS.show_version_warning_banner = false/'
alenkafrim@Alenkas-MacBook-Pro docs % cd 14.0 
alenkafrim@Alenkas-MacBook-Pro 14.0 % find . -iname "*.html" | xargs sed -i '' 's/DOCUMENTATION_OPTIONS.show_version_warning_banner = false/DOCUMENTATION_OPTIONS.show_version_warning_banner = true/'
alenkafrim@Alenkas-MacBook-Pro 14.0 % cd ..
alenkafrim@Alenkas-MacBook-Pro docs % cd dev/
alenkafrim@Alenkas-MacBook-Pro dev % find . -iname "*.html" | xargs sed -i '' 's/DOCUMENTATION_OPTIONS.show_version_warning_banner = false/DOCUMENTATION_OPTIONS.show_version_warning_banner = true/'
alenkafrim@Alenkas-MacBook-Pro dev % cd ..
alenkafrim@Alenkas-MacBook-Pro docs % cd 14.0                                                                                                                                                         
alenkafrim@Alenkas-MacBook-Pro 14.0 % find . -iname "*.html" | xargs sed -i '' "s/DOCUMENTATION_OPTIONS.theme_switcher_version_match = '';/DOCUMENTATION_OPTIONS.theme_switcher_version_match = '14.0\/';/" 

[jorisvandenbossche]

Looks good to me! Let's give this a try

[AlenkaF]

Looks good live also 👍

https://arrow.apache.org/docs/index.html
https://arrow.apache.org/docs/14.0/index.html
https://arrow.apache.org/docs/dev/index.html