fix: OpenSumi MCP Client display error (modelcontextprotocol#150)

Author: life2015

clients.mdx

@@ -47,6 +47,7 @@ This page provides an overview of applications that support the Model Context Pr
 [Roo Code]: https://roocode.com
 [Goose]: https://block.github.io/goose/docs/goose-architecture/#interoperability-with-extensions
 [Windsurf]: https://codeium.com/windsurf
+[OpenSumi]: https://github.com/opensumi/core
 
 [Resources]: https://modelcontextprotocol.io/docs/concepts/resources
 [Prompts]: https://modelcontextprotocol.io/docs/concepts/prompts