Apply suggestion from @Kludex

Kludex · web-flow · commit 3c6b258b0734 · 2026-01-26T14:07:27.000+01:00
diff --git a/docs/migration.md b/docs/migration.md
@@ -133,7 +133,7 @@ from mcp.shared.exceptions import McpError
 try:
     result = await session.call_tool("my_tool")
 except McpError as e:
-    print(f"Error: {e.message}")
+    print(f"Error: {e.error.message}")
 ```
 
 **After (v2):**
