[PATCH] docs: set canonical base URL for HTML output

[Rito Rhymes]

Set the published docs URL as html_baseurl so generated HTML pages
advertise the correct canonical URL metadata.

This helps search engines and other consumers treat docs.kernel.org as
the canonical location for published documentation pages.

Signed-off-by: Rito Rhymes <rito@xxxxxxxxxxxxxx>
---
 Documentation/conf.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/conf.py b/Documentation/conf.py
index 679861503..f517dfeaf 100644
--- a/Documentation/conf.py
+++ b/Documentation/conf.py
@@ -437,6 +437,9 @@ sys.stderr.write("Using %s theme\n" % html_theme)
 # so a file named "default.css" will overwrite the builtin "default.css".
 html_static_path = ["sphinx-static"]
 
+# Canonical base URL for generated HTML pages.
+html_baseurl = "https://docs.kernel.org/";
+
 # If true, Docutils "smart quotes" will be used to convert quotes and dashes
 # to typographically correct entities.  However, conversion of "--" to "—"
 # is not always what we want, so enable only quotes.
-- 
2.51.0