Update README.md

Author: mzafari2

src/events/2024-2025/demos/final-showcase/README.md

@@ -31,7 +31,7 @@ Setup begins at 10:00am, so you're welcome to enter the venue from then on
 [Final Showcase- CampusBuddy2024.pdf](https://github.com/user-attachments/files/19638790/Final.Showcase-compressed.pdf)
 
 ### Schedule [TBD]
-exact times will be announced later
+Exact times will be announced.
 
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