fix dates on jun 16 2025 window

announcement.md

 #### Maintenance Window
 
-Cheaha will be impacted by a maintenance window Jul 16, 2025, through Jul 22, 2025. Read more on our docs at our [News Page](https://docs.rc.uab.edu/news/#2025-05-13-planned-maintenance-window). 
+**NOTICE:** **Dates have been updated to the correct dates.** The dates in this notice were set incorrectly as Jul 16-22. They have been updated to the correct dates of **Jun 16-22**.
+
+Cheaha will be impacted by a maintenance window Jun 16, 2025, through Jul 22, 2025. Read more on our docs at our [News Page](https://docs.rc.uab.edu/news/#2025-05-13-planned-maintenance-window). 
 <br><p style="text-align: right">*Posted: 2025-05-13*</p>