doc: update blog link to /vulnerability

PR-URL: #56198
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>

Author: RafaelGSS

SECURITY.md

@@ -218,7 +218,7 @@ as any other stable feature.
 Security notifications will be distributed via the following methods.
 
 * <https://groups.google.com/group/nodejs-sec>
-* <https://nodejs.org/en/blog/>
+* <https://nodejs.org/en/blog/vulnerability>
 
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