Fix typo in thv quickstart header (#134)

Author: eleftherias

docs/toolhive/tutorials/quickstart.mdx

@@ -210,7 +210,7 @@ running and how they're configured.
 
 :::
 
-## Step 6: Use the MCP server with your AI cline_mcp_settings
+## Step 6: Use the MCP server with your AI client
 
 Now that your MCP server is running, you can use it with your AI client
 application. Open your supported client (VS Code, Cursor, etc.) and ask the AI