[Doc] pyarrow.Array.diff Examples is wrongly rendered

[asfimport]

See https://arrow.apache.org/docs/python/generated/pyarrow.Array.html#pyarrow.Array.diff

The output of the diff function is rendered outside of the code block

Reporter: Alessandro Molina / @amol-

_{Note: This issue was originally created as ARROW-17660. Please see the migration documentation for further details.}

[asfimport]

Apache Arrow JIRA Bot:
This issue was last updated over 90 days ago, which may be an indication it is no longer being actively worked. To better reflect the current state, the issue is being unassigned per project policy. Please feel free to re-take assignment of the issue if it is being actively worked, or if you plan to start that work soon.

[AlenkaF]

Issue resolved by pull request 50096
#50096