doc: improve ls --help grammar

* src/ls.c (usage): Improve grammar.
Reported by Peng Yu.

2 files changed, 2 insertions, 1 deletions

diff --git a/THANKS.in b/THANKS.in
index a7ec93308..2979d52ce 100644
--- a/THANKS.in
+++ b/THANKS.in
@@ -454,6 +454,7 @@ Paul Slootman                       paul@debian.org
 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
diff --git a/src/ls.c b/src/ls.c
index a16725462..c604e14da 100644
--- a/src/ls.c
+++ b/src/ls.c
@@ -4588,7 +4588,7 @@ usage (int status)
       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 (_("\