mass replace "flip map -> forEach"

See `forEach`-introduction commit.
```
rg 'flip map ' --files-with-matches | xargs sed -i 's/flip map /forEach /g'
```

1 files changed, 1 insertions, 1 deletions

diff --git a/nixos/doc/manual/default.nix b/nixos/doc/manual/default.nix
index 7fc0ad702f84..0963560a5bfb 100644
--- a/nixos/doc/manual/default.nix
+++ b/nixos/doc/manual/default.nix
@@ -45,7 +45,7 @@ let
         + "</listitem>";
     in "<itemizedlist>${lib.concatStringsSep "\n" (map (p: describe (unpack p)) packages)}</itemizedlist>";
 
-  optionsListDesc = lib.flip map optionsListVisible (opt: opt // {
+  optionsListDesc = lib.forEach optionsListVisible (opt: opt // {
     # Clean up declaration sites to not refer to the NixOS source tree.
     declarations = map stripAnyPrefixes opt.declarations;
   }