Update apps/site/pages/en/blog/vulnerability/december-2025-security-releases.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Rafael Gonzaga <rafael.nunu@hotmail.com>

Author: RafaelGSS

apps/site/pages/en/blog/vulnerability/december-2025-security-releases.md

@@ -13,7 +13,7 @@ Updates are now available for the 25.x, 24.x, 22.x, 20.x Node.js release lines
 to address:
 
 - 3 high severity issues.
-- 4 medium severity issue.
+- 4 medium severity issues.
 - 1 low severity issue.
 
 This security release includes the following dependency updates to address public vulnerabilities: