* src/ls.c (usage): Improve grammar.
Reported by Peng Yu.
Paul Townsend aab@purdue.edu
Paul Worrall paul@basilisk.uklinux.net
Pawel Prokop pablo@wizard.ae.krakow.pl
+Peng Yu pengyu.ut@gmail.com
Per Cederqvist ceder@lysator.liu.se
Per Kristian Hove perhov@math.ntnu.no
Per Starbäck starback@stp.lingfil.uu.se
printf (_("Usage: %s [OPTION]... [FILE]...\n"), program_name);
fputs (_("\
List information about the FILEs (the current directory by default).\n\
-Sort entries alphabetically if none of -cftuvSUX nor --sort.\n\
+Sort entries alphabetically if none of -cftuvSUX nor --sort is specified.\n\
\n\
"), stdout);
fputs (_("\