Update readme

Author: Reim-developer

readme.md

@@ -1,15 +1,15 @@
 <h1 align="center">
-  <img src="/assets/icon.png" width=200 height=200/><br>
+  <img src="/assets/preview_icon.jpg" width=200 height=200/><br>
     zClipboard: A Mordern Clipboard Manager
 </h1>
 
 <h4 align="center">Save Your Clipboard History, Fast.</h4>
 
 <div align="center">
-    <a href="https://github.com/Reim-developer/zClipboard/actions/workflows/macos.yml" target="_blank">
+    <a href="https://github.com/Reim-developer/zClipboard/actions/workflows/macos.yml">
         <img src="https://github.com/Reim-developer/zClipboard/actions/workflows/macos.yml/badge.svg?branch=master" />
     </a>
-    <a href="https://github.com/Reim-developer/zClipboard/actions/workflows/linux.yml" target="_blank">
+    <a href="https://github.com/Reim-developer/zClipboard/actions/workflows/linux.yml">
         <img src="https://github.com/Reim-developer/zClipboard/actions/workflows/linux.yml/badge.svg?branch=master" />
     </a>
 </div>