doc: Use substitute --replace-fail in manuals

This fixes a warning about --replace being deprecated.

doc/default.nix

@@ -111,7 +111,7 @@ in pkgs.stdenv.mkDerivation {
       ${lib-docs}/index.md \
       > ./functions/library.md
     substitute ./manual.md.in ./manual.md \
-      --replace '@MANUAL_VERSION@' '${pkgs.lib.version}'
+      --replace-fail '@MANUAL_VERSION@' '${pkgs.lib.version}'
 
     mkdir -p out/media
 

nixos/doc/manual/default.nix

@@ -80,17 +80,17 @@ let
     cp -r --no-preserve=all $inputs/* .
 
     substituteInPlace ./manual.md \
-      --replace '@NIXOS_VERSION@' "${version}"
+      --replace-fail '@NIXOS_VERSION@' "${version}"
     substituteInPlace ./configuration/configuration.md \
-      --replace \
+      --replace-fail \
           '@MODULE_CHAPTERS@' \
           ${escapeShellArg (concatMapStringsSep "\n" (p: "${p.value}") config.meta.doc)}
     substituteInPlace ./nixos-options.md \
-      --replace \
+      --replace-fail \
         '@NIXOS_OPTIONS_JSON@' \
         ${optionsDoc.optionsJSON}/${common.outputPath}/options.json
     substituteInPlace ./development/writing-nixos-tests.section.md \
-      --replace \
+      --replace-fail \
         '@NIXOS_TEST_OPTIONS_JSON@' \
         ${testOptionsDoc.optionsJSON}/${common.outputPath}/options.json
     sed -e '/@PYTHON_MACHINE_METHODS@/ {' -e 'r ${testDriverMachineDocstrings}/machine-methods.md' -e 'd' -e '}' \