support ssl for monocart cli

lib/cli.js

@@ -160,8 +160,8 @@ program
 program.command('show-report')
     .alias('show')
     .description('Show report')
-    .argument('[path]', 'Report dir or html path')
-    .option('-s, --ssl <key,cert>', 'Start ssl server')
+    .argument('<path-to-report>', 'Report dir or html path')
+    .option('-s, --ssl <path-to-key,path-to-cert>', 'Start https server')
     .action((str, options) => {
         options.open = true;
         serveReport(str, options);
@@ -170,15 +170,16 @@ program.command('show-report')
 program.command('serve-report')
     .alias('serve')
     .description('Serve report')
-    .argument('[path]', 'Report dir or html path')
-    .option('-s, --ssl [path]', 'Start ssl server')
+    .argument('<path-to-report>', 'Report dir or html path')
+    .option('-s, --ssl <path-to-key,path-to-cert>', 'Start https server')
     .action((str, options) => {
         serveReport(str, options);
     });
 
 program.addHelpText('after', `
 Starts ${EC.cyan('https')} with option --ssl:
-    monocart show-report path-to/index.html ${EC.cyan('--ssl path-to/key,path-to/cert')}
+    monocart show-report <path-to-report> ${EC.cyan('--ssl <path-to-key,path-to-cert>')}
+    # Create and install local CA with 'mkcert', see: https://mkcert.dev
 `);
 
 program.parse();