Update comment

Author: shadowspawn

lib/help.js

@@ -71,7 +71,7 @@ class Help {
     // Built-in help option.
     const helpOption = cmd._getHelpOption();
     if (helpOption && !helpOption.hidden) {
-      // Automatically hide conflicting flags. (Bit magical and messy, but preserve for now!)
+      // Automatically hide conflicting flags. Bit dubious but a historical behaviour that is convenient for single-command programs.
       const removeShort = helpOption.short && cmd._findOption(helpOption.short);
       const removeLong = helpOption.long && cmd._findOption(helpOption.long);
       if (!removeShort && !removeLong) {