Merge pull request #3134 from adriananin/patch-1

update start command to 'npm run dev'

Author: mluukkai

src/content/2/en/part2c.md

@@ -519,7 +519,7 @@ The configuration for the whole application has steadily grown more complex. Let
 
 ![diagram of composition of react app](../../images/2/18e.png)
 
-The JavaScript code making up our React application is run in the browser. The browser gets the JavaScript from the <i>React dev server</i>, which is the application that runs after running the command <em>npm start</em>. The dev-server transforms the JavaScript into a format understood by the browser. Among other things, it stitches together JavaScript from different files into one file. We'll discuss the dev-server in more detail in part 7 of the course.
+The JavaScript code making up our React application is run in the browser. The browser gets the JavaScript from the <i>React dev server</i>, which is the application that runs after running the command <em>npm run dev</em>. The dev-server transforms the JavaScript into a format understood by the browser. Among other things, it stitches together JavaScript from different files into one file. We'll discuss the dev-server in more detail in part 7 of the course.
 
 The React application running in the browser fetches the JSON formatted data from <i>json-server</i> running on port 3001 on the machine. The server we query the data from - <i>json-server</i> - gets its data from the file <i>db.json</i>.