documentation with examples for local and remote MCP

i'm trying to add a local time reporting took, but the MCP fails to start.

https://github.com/modelcontextprotocol/servers/tree/main/src/time

`
  "mcp": {
    "local-mcp-time": {
      "type": "local",
      "command": ["uvx", "x", "mcp-server-time"],
      "enabled": true,
      "environment": {
        "MY_ENV_VAR": "my_env_var_value"
      }
    }
  }
`