Update event date for Math Major Declaration

- Adjusted event date in filename from March 6 to March 17.
- Corrected event date in text to **Friday, March 21**.

Signed-off-by: Leonid Petrov <[email protected]>

Author: lenis2000

_posts/events/2025-03-06-Major-Party.md renamed to _posts/events/2025-03-17-Major-Party.md

@@ -9,5 +9,4 @@ image: __SITE_URL__/img/news_events/MathMajorDeclaration_2025.png
 good-md: true
 ---
 
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 We're hosting a Math Major Declaration Event for prospective math majors on **Friday March 21 from 2-4pm in Kerchof 314**, where faculty will be available to discuss major plans and share information about our program opportunities including undergraduate research, the distinguished major program, directed reading program, geometry lab, community outreach, and student organizations, with refreshments provided.