Docs: Fix a typo in the wp_dashboard_rss_control() inline comment

[mukeshpanchal27]

Trac ticket: https://core.trac.wordpress.org/ticket/64896

While working on #12680 found this typo issue.

Correct If black to If blank in the inline comment describing the optional RSS widget title handling. Longstanding typo, comment-only, no functional change.

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[Copilot]

Pull request overview

Fixes a small inline documentation typo in the Dashboard RSS widget control logic (wp_dashboard_rss_control()), improving comment accuracy with no functional impact.

Changes:

• Corrects “If black” → “If blank” in the inline comment describing optional RSS widget title behavior.

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[github-actions]

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[github-actions]

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Props mukesh27.

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[shail-mehta]

LGTM👍