criu --help: minor cleanups

1. "written in file" -> "written to file"

2. "relative path is relative" -> "path is relative"

3. "each restored processes is written to the FILE.pid file\n" ->
   "log of each restored process is written to a separate FILE.pid file"
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

crtools.c

@@ -373,7 +373,7 @@ usage:
 "  -s|--leave-stopped    leave tasks in stopped state after checkpoint instead of killing them\n"
 "  -R|--leave-running    leave tasks in running state after checkpoint\n"
 "  -D|--images-dir DIR   directory where to put images to\n"
-"     --pidfile FILE     write a pid of a root task in this file\n"
+"     --pidfile FILE     write a pid of a root task to this file\n"
 "\n"
 "* Special resources support:\n"
 "  -x|--" USK_EXT_PARAM "      allow external unix connections\n"
@@ -390,9 +390,9 @@ usage:
 "  -l|--" OPT_FILE_LOCKS "       handle file locks, for safety, only used for container\n"
 "\n"
 "* Logging:\n"
-"  -o|--log-file FILE    log file name (relative path is relative to --images-dir)\n"
-"     --log-pid          if the -o option is in effect, each restored processes is\n"
-"                        written to the FILE.pid file\n"
+"  -o|--log-file FILE    log file name (path is relative to --images-dir)\n"
+"     --log-pid          if the -o option is in effect, log of each restored process is\n"
+"                        written to a separate FILE.pid file\n"
 "  -v NUM                set logging level\n"
 "                          0 - messages regardless of log level\n"
 "                          1 - errors, when we are in trouble\n"