update examples

Author: ethanpalm

code.mdx

@@ -76,7 +76,7 @@ Add a title after the programming language to label your code example. Titles ca
 const hello = "world";
 ```
 
-````mdx Code Block Example
+````mdx
 ```javascript Code Block Example
 const hello = "world";
 ```
@@ -98,7 +98,7 @@ const hello = "world";
 ## Line Highlighting
 Highlight specific lines in your code blocks using `highlight` with the line numbers or ranges you want to highlight.
 
-```javascript Line Highlighting Example highlight={1,3-5}
+```javascript Line Highlighting Example highlight={1-2,5}
 const greeting = "Hello, World!";
 function sayHello() {
   console.log(greeting);
@@ -107,7 +107,7 @@ sayHello();
 ```
 
 ````mdx
-```javascript Line Highlighting Example highlight={1,3-5}
+```javascript Line Highlighting Example highlight={1-2,5}
 const greeting = "Hello, World!";
 function sayHello() {
   console.log(greeting);