Include example codes in version update script

## Is your feature request related to a problem or challenge?

Version number in our examples are easy to forget, we should keep them up to date as well

## Describe the solution you'd like

> Maybe we could update the script here to automatically clean it up: https://github.com/apache/arrow-datafusion/blob/main/dev/update_datafusion_versions.py

_Originally posted by @alamb in https://github.com/apache/arrow-datafusion/pull/5962#discussion_r1164590497_

Read dev/update_datafusion_versions.py and inspect the repository examples whose version numbers are maintained separately. Trace how the script updates existing version references, then extend its coverage so the example codes are updated automatically and verify that the script still handles the current version-update workflow.

Written by the indexing model from the issue text.