fix: use absolute URL for logo so it renders on npmjs.com

Author: jaberjaber23

README.md

@@ -1,5 +1,5 @@
 <p align="center">
-  <img src="forge-logo.jpg" alt="Forge" width="120" />
+  <img src="https://raw.githubusercontent.com/RightNow-AI/forge-mcp-server/main/forge-logo.jpg" alt="Forge" width="120" />
 </p>
 
 <h1 align="center">Forge MCP Server</h1>