docs(concepts) Add missing code snippet filename (#2652)

* docs(concepts) add missing code snippet filename

* docs(concepts) adding contributor name

Author: EugeneHlushko

src/content/concepts/entry-points.md

@@ -6,6 +6,7 @@ contributors:
   - chrisVillanueva
   - byzyk
   - sokra
+  - EugeneHlushko
 ---
 
 As mentioned in [Getting Started](/guides/getting-started/#using-a-configuration), there are multiple ways to define the `entry` property in your webpack configuration. We will show you the ways you __can__ configure the `entry` property, in addition to explaining why it may be useful to you.
@@ -25,6 +26,8 @@ module.exports = {
 
 The single entry syntax for the `entry` property is a shorthand for:
 
+__webpack.config.js__
+
 ```javascript
 module.exports = {
   entry: {