docs: update logo to assets/logo.jpg

Author: homanp

README.md

@@ -1,5 +1,5 @@
 <p align="center">
-  <img src="assets/brin-logo.png" alt="brin" height="120">
+  <img src="assets/logo.jpg" alt="brin" height="120">
 </p>
 
 <h1 align="center">brin cli</h1>