Update README.md

Author: learning-zone

README.md

@@ -8744,7 +8744,7 @@ console.log(val.toString(16)); // A  ==> Hexadecimal Conversion
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 </div>
 
-## 335Q. ***How setTimeout() and setInterval() are different from each other ?***
+## Q. ***How setTimeout() and setInterval() are different from each other?***
 
 ```javascript
 //Syntax for setTimeout