Remove more words (#12852)

* remove 'basically' from docs

* remove 'simply' from docs

* remove most uses of 'just' from docs

docs/tutorial/first-app.md

@@ -44,7 +44,7 @@ run the main process. An example of your `package.json` might look like this:
 ```
 
 __Note__: If the `main` field is not present in `package.json`, Electron will
-attempt to load an `index.js` (just like Node.js itself). If this was actually
+attempt to load an `index.js` (as Node.js does). If this was actually
 a simple Node application, you would add a `start` script that instructs `node`
 to execute the current package:
 
@@ -101,7 +101,7 @@ const electron = require('electron')
 
 The `electron` module exposes features in namespaces. As examples, the lifecycle
 of the application is managed through `electron.app`, windows can be created
-using the `electron.BrowserWindow` class. A simple `main.js` file might just wait
+using the `electron.BrowserWindow` class. A simple `main.js` file might wait
 for the application to be ready and open a window:
 
 ```javascript