Update README.md

Author: Souravdey777

README.md

@@ -26,16 +26,18 @@ Reference Link 🔗 of Blogs are not enough, Give your blogs what it actually de
 </p>
 
 <p align="center">
-<a  href="https://flexbox-guide.souravdey777.vercel.app" target="_blank">
-<img src="./public/cover.jpg?raw=true" width=1280px title="Flexbox-Guide: A Flexbox Code Generator" alt="Flexbox-Guide"/>
+<a  href="https://hashnode-blog-cards.vercel.app/" target="_blank">
+<img src="https://raw.githubusercontent.com/Souravdey777/HashnodeBlogCards/main/public/Hashnode%20Blog%20Cards%20Screenshot.png" width="600px" title="Hashnode Blog Cards" alt="Hashnode Blog Cards"/>
 </a>
 </p>
 
 ### Table of Contents
 
 - [About `Hashnode Blog Cards`](#about-hashnode-blog-cards)
 - [About The API Endpoints](#about-the-api-endpoints)
-
+  - [getHashnodeBlog](#gethashnodeblog)
+  - [getHashnodeBlogBySequence](#gethashnodeblogbysequence)
+  - [getLatestHashnodeBlog](#getlatesthashnodeblog)
 - [Features](#features)
 - [Technologies](#technologies)
 - [Setup](#setup)