message: tools: Fix `directory` path in package.json
  Existing `directory` entry incorrectly pointed to `packages/tools`
  instead of `tools`
diff: "repository": {
  "type": "git",
  "url": "https://github.com/microsoft/FluidFramework.git",
  - "directory": "packages/tools/api-markdown-documenter"
  + "directory": "tools/api-markdown-documenter"
  },
  "license": "MIT",
  "author": "Microsoft and contributors",
  