Update incremental-refresh.md

[edhans]

Removed the " After XMLA-endpoints for Power BI Premium are available, the partitions become visible." sentence. Dataflows are not available via XMLA

[opbld30]

Docs Build status updates of commit f1dd8d0:

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powerquery-docs/dataflows/incremental-refresh.md	✅Succeeded

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[Luitwieler]

@DougKlopfenstein ready to merge to main ;-)

[opbld31]

Docs Build status updates of commit f1dd8d0:

✅ Validation status: passed

File	Status	Preview URL	Details
powerquery-docs/dataflows/incremental-refresh.md	✅Succeeded

For more details, please refer to the build report.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

For any questions, please:

• Try searching the docs.microsoft.com contributor guides
• Post your question in the Docs support channel