Verbosity level help

lib/prgutil.cpp

@@ -48,7 +48,7 @@ SUBool::PrgOptions::InitCommon()
    auto opt_verbosity =
        boost::make_shared<po::option_description>("verbosity,b",
            po::value<unsigned>(&mVerbosity)->default_value(mVerbosity),
-           "Verbosity level of the log which is written to standard output."
+           "Verbosity level of the log which is written to the standard output."
            " 0 means no log is written, however, messages of glucose can still "
            "appear.");
    mCommon.add(opt_verbosity);