Small addition to docs for new parameter

Author: shadowspawn

index.js

@@ -311,7 +311,7 @@ class Help {
 
   /**
    * Wrap the given string to width characters per line, with lines after the first indented.
-   * Do not wrap if insufficient room for wrapping, or string is manually formatted.
+   * Do not wrap if insufficient room for wrapping (minColumnWidth), or string is manually formatted.
    *
    * @param {string} str
    * @param {number} width

typings/index.d.ts

@@ -119,7 +119,7 @@ declare namespace commander {
 
     /**
      * Wrap the given string to width characters per line, with lines after the first indented.
-     * Do not wrap if insufficient room for wrapping, or string is manually formatted.
+     * Do not wrap if insufficient room for wrapping (minColumnWidth), or string is manually formatted.
      */
     wrap(str: string, width: number, indent: number, minColumnWidth?: number): string;