Fixed an issue where Zed extension read settings from lsp.path-server.settings rather than lsp.path-server-lsp.settings

[kunlinglio]

Fixes #55

After adding this field in Zed settings file:

"lsp": {
  "path-server-lsp": {
    "settings": {
      "basePath": ["${document}"],
      "completion": {
        "maxResults": 2,
      },
    },
  }
}

Before this PR, the path-server lsp get:

[Config] Configuration changed, update to: {
  "base_path": [
    "${document}",
    "${workspaceFolder}"
  ],
  "completion": {
    "max_results": 0,
    "show_hidden_files": true,
    "exclude": [
      "**/node_modules",
      "**/.git",
      "**/.DS_Store"
    ],
    "trigger_next_completion": true
  },
  "highlight": {
    "enable": true,
    "highlight_directory": true
  }
}

After this PR, the path-server lsp get:

[Config] Configuration changed, update to: {
  "base_path": [
    "${document}"
  ],
  "completion": {
    "max_results": 2,
    "show_hidden_files": true,
    "exclude": [
      "**/node_modules",
      "**/.git",
      "**/.DS_Store"
    ],
    "trigger_next_completion": true
  },
  "highlight": {
    "enable": true,
    "highlight_directory": true
  }
}