Fix example in upgrade guide

[alamb]

• Merging this PR will update Make SessionContext::register_parquet obey collect_statistics config apache/datafusion#16080

I think this will fix the CI test failure

[hyperlint-ai]

PR Change Summary

Updated the upgrade guide to fix an example related to the ListingOptions configuration.

• Modified the example for ListingOptions to include the correct usage of ParquetFormat.
• Clarified the requirement to explicitly set the collect_stat option.

Modified Files

• docs/source/library-user-guide/upgrading.md

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