Update april-2024-security-releases.md: Fix pluralization ("1 ... issues" -> "1 ... issue") (#6588)

Signed-off-by: Joseph Frazier <[email protected]>

Author: josephfrazier

pages/en/blog/vulnerability/april-2024-security-releases.md

@@ -12,14 +12,14 @@ author: The Node.js Project
 The Node.js project will release new versions of the 18.x, 20.x, 21.x
 releases lines on or shortly after, Wednesday, April 3, 2024 in order to address:
 
-- 1 medium severity issues.
-- 1 high severity issues.
+- 1 medium severity issue.
+- 1 high severity issue.
 
 ## Impact
 
-The 18.x release line of Node.js is vulnerable to 1 medium severity issues, 1 high severity issues.
-The 20.x release line of Node.js is vulnerable to 1 medium severity issues, 1 high severity issues.
-The 21.x release line of Node.js is vulnerable to 1 medium severity issues, 1 high severity issues.
+The 18.x release line of Node.js is vulnerable to 1 medium severity issue, 1 high severity issue.
+The 20.x release line of Node.js is vulnerable to 1 medium severity issue, 1 high severity issue.
+The 21.x release line of Node.js is vulnerable to 1 medium severity issue, 1 high severity issue.
 
 ## Release timing