doc: use @xref correctly
commit125ec0d7a0cc81976316be203acc347b2f8fc1cb
authorEric Blake <eblake@redhat.com>
Tue, 13 Sep 2016 22:44:02 +0000 (13 17:44 -0500)
committerEric Blake <eblake@redhat.com>
Tue, 13 Sep 2016 22:44:02 +0000 (13 17:44 -0500)
treea5ebf5f52fb20d8164f58812e7a7af3756b9b9b0
parentab3086737c7ac8ab07fdaee7c35bb8f91fa8a5c0
doc: use @xref correctly

Silences this warning from new-enough texinfo:
./doc/autoconf.texi:14236: warning: @xref node name should not contain `.'

* doc/autoconf.texi (Macro Definitions): No need for .info.

Signed-off-by: Eric Blake <eblake@redhat.com>
doc/autoconf.texi