fix syntax for continue, split and recursive-functions content

Author: sumn2u

en/functions/recursive-functions.md

@@ -25,8 +25,10 @@ function recursiveFunction(params) {
 Common Use Cases
 Recursive functions are often used to solve problems that can be divided into smaller, similar subproblems. Here are some common use cases:
 
-1. Calculating Factorials
+1. Calculating Factorials:
+
 A recursive function can be used to calculate the factorial of a number.
+
 ```javascript
 function factorial(n) {
   if (n === 0) {
@@ -38,8 +40,9 @@ function factorial(n) {
 
 factorial(5); // Returns 120
 ```
-2. Fibonacci Sequence
+2. Fibonacci Sequence:
 The Fibonacci sequence can be calculated using recursion.
+
 ```javascript
 function fibonacci(n) {
   if (n <= 1) {

en/loops/continue.md

@@ -19,4 +19,5 @@ for (let i = 1; i <= 5; i++) {
     }
     console.log(`Current value of i: ${i}`);
 }
+```
 

en/strings/split.md

@@ -4,7 +4,7 @@ pageNumber: 36
 ---
 # Split
 
-The split() method divides a string into a list of substrings and returns them as an array.
+The `split()` method divides a string into a list of substrings and returns them as an array.
 * using the `split()` method
 * using the template literal (introduced in ES6)
 

en/strings/substring.md

@@ -8,19 +8,18 @@ The `string.substring()` is an inbuilt function in JavaScript that is used to re
 
 Syntax: 
 
-string.substring(Startindex, Endindex)
+`string.substring(StartIndex, EndIndex)`
 
 # Syntax:
 
-*str.substr(start , length)
-
+* using `str.substr(start , length)`
 * using the `substr()` method
 * using the template literal (introduced in ES6)
 
-The substr() method takes in:
+The `substr()` method takes in:
 
-Parameters: Here the Startindex and Endindex describe the part of the string to be taken as a substring. Here the Endindex is optional. 
-Return value: It returns a new string that is part of the given string. JavaScript code to show the working of string.substring() function: 
+Parameters: Here the StartIndex and EndIndex describe the part of the string to be taken as a substring. Here, the EndIndex is optional. 
+Return value: It returns a new string that is part of the given string. JavaScript code to show the working of `string.substring()` function: 
 
 ```javascript
 //Example 1: