update README

Author: penicillin0

README.md

@@ -1,6 +1,6 @@
 <img src="https://user-images.githubusercontent.com/56141035/142194448-ba244c30-3fdb-4e2e-9c59-0cd92fc55120.jpg" width=80%>
 
-# <img src="https://user-images.githubusercontent.com/56141035/142188980-988dc6f8-2c4c-4158-8573-d12a5be04479.png" width=5%> Scrapbox List Marker 0.0.1
+# <img src="public/images/icon.png" width=5%> Scrapbox List Marker 0.0.1
 <b>Customize the scrapbox list marker.</b>
 
 This is a third party chrome extension for Scrapbox users.<br>