doc: fix typo referencing RFC 2822

* doc/coreutils.texi (date invocation): s/822/2822/.
Fixes https://bugs.gnu.org/34438

diff --git a/doc/coreutils.texi b/doc/coreutils.texi
index be35de49075a49bf9c6c837616246f07df736695..25438d59591447d421cdcb195b2d368246df61a0 100644 (file)
--- a/doc/coreutils.texi
+++ b/doc/coreutils.texi
@@ -16193,7 +16193,7 @@ Fri, 09 Sep 2005 13:51:39 -0700
 @opindex --rfc-2822
 This format conforms to Internet RFCs
 @uref{https://tools.ietf.org/search/rfc5322, 5322},
-@uref{https://tools.ietf.org/search/rfc2822, 822} and
+@uref{https://tools.ietf.org/search/rfc2822, 2822} and
 @uref{https://tools.ietf.org/search/rfc822, 822}, the
 current and previous standards for Internet email.
 For compatibility with older versions of @command{date},