chromium/chrome/test/data/extensions/manifest_tests/normalize_icon_paths.json

{
  "name": "normalize icon paths",
  "manifest_version": 3,
  "description": "We should remove any leading '/' character from icon paths when loading them.",
  "version": "1",
  "icons": {
    "16": "/16.png",
    "48": "48.png"
  }
}