Fix CSS URLs

Author: afh

apidoc_header.html

@@ -34,7 +34,7 @@
 
 <!-- BEGIN LEDGER_HEADER -->
 <style type="text/css">
-@import url("https://ledger-cli.org/stylesheets/site.css");
+@import url("https://ledger-cli.org/css/site.css");
 header { line-height: 1.3; }
 #main-nav { flex-grow: 0; }
 header, #main-nav { max-width: 60em; margin: auto; }

flake.nix

@@ -88,7 +88,7 @@
 
          postBuild = ''
            # Patch web version of ledger manual to support dark mode
-           sed -e 's@</style>@&\n<link rel="stylesheet" type="text/css" href="https://www.gnu.org/software/gnulib/manual.css"><link rel="stylesheet" type="text/css" href="/stylesheets/doc.css">@' ledger3.html -i
+           sed -e 's@</style>@&\n<link rel="stylesheet" type="text/css" href="https://www.gnu.org/software/gnulib/manual.css"><link rel="stylesheet" type="text/css" href="/css/doc.css">@' ledger3.html -i
            '';
        };
 
@@ -111,7 +111,7 @@
            makeinfo --force --html --no-split ledger-mode.texi
            makeinfo --force --plaintext --no-split -o ledger-mode.txt ledger-mode.texi
            # Patch web version of ledger mode manual to support dark mode
-           sed -e 's@</style>@&\n<link rel="stylesheet" type="text/css" href="https://www.gnu.org/software/gnulib/manual.css"><link rel="stylesheet" type="text/css" href="/stylesheets/doc.css">@' ledger-mode.html -i
+           sed -e 's@</style>@&\n<link rel="stylesheet" type="text/css" href="https://www.gnu.org/software/gnulib/manual.css"><link rel="stylesheet" type="text/css" href="/css/doc.css">@' ledger-mode.html -i
            runHook postBuild
          '';