doc: do not use @acronym * doc/inet_ntoa.texi (inet_ntoa): * doc/parse-datetime.texi (Seconds since the Epoch) (Specifying time zone rules): * doc/posix-functions/inet_ntoa.texi (inet_ntoa): Don't use @acronym. Problem reported by John Darlington in <http://lists.gnu.org/archive/html/bug-gnulib/2012-08/msg00124.html>.