doc: avoid makeinfo warning

makeinfo issues the following:

  doc/coreutils.texi:6568: warning: @sc argument all uppercase,\
    thus no effect.

* doc/coreutils.texi (join invocation): Remove the @sc macro around
the all uppercase "GNU".

diff --git a/doc/coreutils.texi b/doc/coreutils.texi
index a649c088b80f803b88c056346af6e9a41a792002..d582c8d1c88d45c9267e52f6aa8c706a60226728 100644 (file)
--- a/doc/coreutils.texi
+++ b/doc/coreutils.texi
@@ -6565,7 +6565,7 @@ Charlie  34    NA
 @end example
 
 
-To sort a file with a header line, use @sc{GNU} @command{sed -u}.
+To sort a file with a header line, use GNU @command{sed -u}.
 The following example sort the files but keeps the first line of each
 file in place: