Correct the release date for NAP DoS 4.6 (#345)

This commit adds the correct release date for NAP DoS 4.6.

Author: jputrino

content/nap-dos/releases/about-4.6.md

@@ -13,7 +13,7 @@ NGINX App Protect DoS provides behavioral protection against Denial of Service (
 
 ## Release 4.6
 
-Mar 24, 2025
+April 1, 2025
 
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