nginx-doc: update source

Upstream has migrated the repos from mercurial to github
No longer need the google analytics patch as they don't seem
to include it anymore.

pkgs/by-name/ng/nginx-doc/exclude-google-analytics.patch

@@ -1,29 +0,0 @@
-Kill google analytics from local documentation.
-
-diff -r bb0a2fbdc886 xslt/ga.xslt
---- a/xslt/ga.xslt	Mon Apr 06 11:17:11 2020 +0100
-+++ b/xslt/ga.xslt	Thu Apr 09 10:29:02 2020 -0400
-@@ -6,23 +6,6 @@
- <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
- 
- <xsl:template name="ga">
--
--    <script>
--        (function(w, d, s, l, i) {
--            w[l] = w[l] || [];
--            w[l].push({
--                'gtm.start': new Date().getTime(),
--                event: 'gtm.js'
--            });
--            var f = d.getElementsByTagName(s)[0],
--                j = d.createElement(s),
--                dl = l != 'dataLayer' ? '&amp;l=' + l : '';
--            j.async = true;
--            j.src = '//www.googletagmanager.com/gtm.js?id=' + i + dl;
--            f.parentNode.insertBefore(j, f);
--        })(window, document, 'script', 'dataLayer', 'GTM-TPSP33');
--    </script>
--
- </xsl:template>
- 
- </xsl:stylesheet>

pkgs/by-name/ng/nginx-doc/package.nix

@@ -3,7 +3,7 @@
   stdenv,
   libxml2,
   libxslt,
-  fetchhg,
+  fetchFromGitHub,
 }:
 
 # Upstream maintains documentation (sources of https://nginx.org) in separate
@@ -14,13 +14,13 @@
 # $out/bin/nginx, but we have no better options.
 stdenv.mkDerivation {
   pname = "nginx-doc-unstable";
-  version = "2022-05-05";
-  src = fetchhg {
-    url = "https://hg.nginx.org/nginx.org";
-    rev = "a3aee2697d4e";
-    sha256 = "029n4mnmjw94h01qalmjgf1c2h3h7wm798xv5knk3padxiy4m28b";
+  version = "0-unstable-2026-05-15";
+  src = fetchFromGitHub {
+    owner = "nginx";
+    repo = "nginx.org";
+    rev = "7884e3ae20269c6aa718dc104c0c578f797e5269";
+    hash = "sha256-ut2LRZg2gyGPbili7XcOH0wZ/nI3ArA2RGWJKcZTBOk=";
   };
-  patches = [ ./exclude-google-analytics.patch ];
   nativeBuildInputs = [
     libxslt
     libxml2