Update README.md

Author: jcs090218

README.md

@@ -1,6 +1,6 @@
 <picture>
-  <source media="(prefers-color-scheme: light)" srcset="https://raw.githubusercontent.com/jcs-emacs/jcs-elpa/master/docs/etc/sink/black.png">
-  <source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/jcs-emacs/jcs-elpa/master/docs/etc/sink/white.png">
+  <source media="(prefers-color-scheme: light)" srcset="https://raw.githubusercontent.com/jcs-emacs/jcs-elpa/master/docs/etc/logo/light/sink.png">
+  <source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/jcs-emacs/jcs-elpa/master/docs/etc/logo/dark/sink.png">
   <img width="25%" align="right" src="">
 </picture>