message: update node version info
diff: @@ -22,7 +22,7 @@ Using `npm` you can upgrade to the latest stable version of AutoRest:
  Installing AutoRest on Windows, MacOS or Linux involves two steps:
  -1. __Install [Node.js](https://nodejs.org/en/)__ (10.16.x LTS HIGHLY RECOMENDED)
  +1. __Install [Node.js](https://nodejs.org/en/)__ (node 10.16.x LTS is a bare minimum, node 12 and 13 have some great performance benfits.)
  > for more help, check out [Installing Node.JS on different platforms](./docs/developer/workstation.md#nodejs)
  2. __Install AutoRest__ using `npm`
  