[ARROW-12396] [Python][Docs] Clarify serialization docstrings about deprecated status

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0
• Component/s: Documentation, Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/28189
• Assignee: Joris Van den Bossche
• Reporter: Joris Van den Bossche
• Created: 15/Apr/21 09:18
• Updated: 11/Jan/23 08:26
• Resolved: 15/Apr/21 12:41

Description

Currently the docstring itself says nothing about it, there is only the warning.

Issue Links

• links to: GitHub Pull Request #10045