fix: change back the next and prev filenames lost from previous merge

website/javascript/datatypes.md

@@ -1,8 +1,8 @@
 ---
-title: 'Introduction To Javascript'
-subheading: 'Data types'
-next: 'Interaction'
-prev: 'Introduction'
+title: "Introduction To Javascript"
+subheading: "Data types"
+next: "interaction"
+prev: "introduction"
 ---
 
 **A value in JavaScript is always of a certain type. For example, a string or a number**.
@@ -17,4 +17,4 @@ Programming languages that allow such things, such as JavaScript, are called “
 // no error
 let message = "hello";
 message = 123456;
-```
+```

website/javascript/interaction.md

@@ -1,8 +1,8 @@
 ---
-title: 'Introduction To Javascript'
-subheading: 'Interaction: alert, prompt, confirm'
-next: ''
-prev: 'Datatypes'
+title: "Introduction To Javascript"
+subheading: "Interaction: alert, prompt, confirm"
+next: ""
+prev: "datatypes"
 ---
 
 As we’ll be using the browser as our demo environment, let’s see a couple of functions to interact with the user: alert, prompt and confirm.
@@ -13,5 +13,3 @@ This one we’ve seen already. It shows a message and waits for the user to pres
 ```javascript
 alert("Hello");
 ```
-
-

website/javascript/introduction.md

@@ -1,16 +1,14 @@
 ---
-title: 'Introduction To Javascript'
-subheading: 'What Is Javascript ?'
-next: 'Datatypes'
-prev: ''
+title: "Introduction To Javascript"
+subheading: "What Is Javascript ?"
+next: "datatypes"
+prev: ""
 ---
 
-Last year, millions of learners from our community started with JavaScript. 
+Last year, millions of learners from our community started with JavaScript.
 
 Why? JavaScript is primarily known as the language of most modern web browsers, and its early quirks gave it a bit of a bad reputation.
 
-However, the language has continued to evolve and improve. 
+However, the language has continued to evolve and improve.
 
 JavaScript is a powerful, flexible, and fast programming language now being used for increasingly complex web development and beyond!
-
-