[PULL 23/31] docs/devel: update C standard to C11

[Alex Bennée]

Since 8a9d3d5640 (configure: Use -std=gnu11) we have allowed C11 code
so lets reflect that in the style guide.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20220105135009.1584676-24-alex.bennee@linaro.org>

diff --git a/docs/devel/style.rst b/docs/devel/style.rst
index 9c5c0fffd9..4f770002a7 100644
--- a/docs/devel/style.rst
+++ b/docs/devel/style.rst
@@ -483,11 +483,11 @@ of arguments.
 C standard, implementation defined and undefined behaviors
 ==========================================================
 
-C code in QEMU should be written to the C99 language specification. A copy
-of the final version of the C99 standard with corrigenda TC1, TC2, and TC3
-included, formatted as a draft, can be downloaded from:
+C code in QEMU should be written to the C11 language specification. A
+copy of the final version of the C11 standard formatted as a draft,
+can be downloaded from:
 
-    `<http://www.open-std.org/jtc1/sc22/WG14/www/docs/n1256.pdf>`_
+    `<http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1548.pdf>`_
 
 The C language specification defines regions of undefined behavior and
 implementation defined behavior (to give compiler authors enough leeway to
-- 
2.30.2