nginx: fix link to discussion explaining why "with" is not used

This is because we are in a huge "rec" that takes precedence for
symbols in its scope, despite the more nested "with".

(cherry picked from commit 7ee8945a12)

pkgs/top-level/all-packages.nix

@@ -19203,7 +19203,7 @@ in
     zlib = zlib-ng.override { withZlibCompat = true; };
     withPerl = false;
     # We don't use `with` statement here on purpose!
-    # See https://github.com/NixOS/nixpkgs/pull/10474/files#r42369334
+    # See https://github.com/NixOS/nixpkgs/pull/10474#discussion_r42369334
     modules = [ nginxModules.rtmp nginxModules.dav nginxModules.moreheaders ];
     # Use latest boringssl to allow http3 support
     openssl = boringssl;
@@ -19213,7 +19213,7 @@ in
     zlib = zlib-ng.override { withZlibCompat = true; };
     withPerl = false;
     # We don't use `with` statement here on purpose!
-    # See https://github.com/NixOS/nixpkgs/pull/10474/files#r42369334
+    # See https://github.com/NixOS/nixpkgs/pull/10474#discussion_r42369334
     modules = [ nginxModules.rtmp nginxModules.dav nginxModules.moreheaders ];
   };
 
@@ -19221,7 +19221,7 @@ in
     zlib = zlib-ng.override { withZlibCompat = true; };
     withPerl = false;
     # We don't use `with` statement here on purpose!
-    # See https://github.com/NixOS/nixpkgs/pull/10474/files#r42369334
+    # See https://github.com/NixOS/nixpkgs/pull/10474#discussion_r42369334
     modules = [ nginxModules.dav nginxModules.moreheaders ];
   };