docs: update README

Author: mrholek

README.md

@@ -67,19 +67,13 @@ $ yarn install
 ``` bash
 # dev server with hot reload at http://localhost:3000
 $ npm start 
-
-# if you use Node 17+ use this command instead of `npm start`
-$ npm run start:n17 
 ```
 
 or 
 
 ``` bash
 # dev server with hot reload at http://localhost:3000
 $ yarn start
-
-# if you use Node 17+ use this command instead of `yarn start`
-$ yarn start:n17 
 ```
 
 Navigate to [http://localhost:3000](http://localhost:3000). The app will automatically reload if you change any of the source files.
@@ -91,19 +85,13 @@ Run `build` to build the project. The build artifacts will be stored in the `bui
 ```bash
 # build for production with minification
 $ npm run build
-
-# if you use Node 17+ use this command instead of `build run build`
-$ npm run build:n17 
 ```
 
 or
 
 ```bash
 # build for production with minification
 $ yarn build
-
-# if you use Node 17+ use this command instead of `yarn build`
-$ yarn build:n17 
 ```
 
 ## What's included