Hi, see attached patch.
BR, Hans

$ cat 0001-Correct-example-in-documentation.patch
From 52d2d228065511a93317ba9aeb08c883ee150020 Mon Sep 17 00:00:00 2001
From: Hans Ginzel <hans@matfyz.cz>
Date: Wed, 9 Jul 2025 13:36:36 +0200
Subject: [PATCH] Correct example in documentation

---
 doc/sed.texi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/doc/sed.texi b/doc/sed.texi
index f681faa..7609a69 100644
--- a/doc/sed.texi
+++ b/doc/sed.texi
@@ -3378,9 +3378,9 @@ As are the following (@samp{0x5b},@samp{0x5d} are the
hexadecimal
 @example
 @group
 $ echo abc | sed 's/[a]/x/'
-Xbc
+xbc
 $ echo abc | sed 's/\x5ba\x5d/x/'
-Xbc
+xbc
 @end group
 @end example
 @codequoteundirected off
--
2.48.1