Remove the cd/start commands (#3728)

They're already recommended by the create-react-app command

Author: nickserv

docs/introduction/GettingStarted.md

@@ -48,8 +48,6 @@ The recommended way to start new apps with React and Redux is by using the [offi
 
 ```sh
 npx create-react-app my-app --template redux
-cd my-app
-npm start
 ```
 
 ## Basic Example

docs/introduction/Installation.md

@@ -39,6 +39,4 @@ The recommended way to start new apps with React and Redux is by using the [offi
 
 ```sh
 npx create-react-app my-app --template redux
-cd my-app
-npm start
 ```