Amend concurrency text in help message

Author: flanglet

src/app/Kanzi.cpp

@@ -157,7 +157,7 @@ void printHelp(Printer& log, const string& mode, bool showHeader)
    log.println("   -j, --jobs=<jobs>", true);
    log.println("        Maximum number of jobs the program may start concurrently", true);
    #ifdef CONCURRENCY_ENABLED
-      int cores = max(int(thread::hardware_concurrency()) / 2, 1);
+      int cores = min(max(int(thread::hardware_concurrency()) / 2, 1), MAX_CONCURRENCY);
       stringstream sstr;
       sstr << cores;
       log.println("        If 0 is provided, use all available cores (maximum is 64).", true);
@@ -168,8 +168,8 @@ void printHelp(Printer& log, const string& mode, bool showHeader)
    log.println("   -v, --verbose=<level>", true);
    log.println("        0=silent, 1=default, 2=display details, 3=display configuration,", true);
    log.println("        4=display block size and timings, 5=display extra information", true);
-   log.println("        Verbosity is reduced to 1 when files are processed concurrently", true);
-   log.println("        Verbosity is reduced to 0 when the output is 'stdout'\n", true);
+   log.println("        Verbosity is reduced to 1 when files are processed concurrently.", true);
+   log.println("        Verbosity is reduced to 0 when the output is 'stdout'.\n", true);
 
    if (mode != "y") {
        log.println("   -f, --force", true);