message: Fix openSettings misspelling in defaults
  Fixes
diff: { "command": "toggleFullscreen", "keys": "f11" },
  { "command": "openNewTabDropdown", "keys": "ctrl+shift+space" },
  { "command": "openSettings", "keys": "ctrl+," },
  - { "command": { "action": "openSettings", "target": "defaultFile" }, "keys": "ctrl+alt+," },
  + { "command": { "action": "openSettings", "target": "defaultsFile" }, "keys": "ctrl+alt+," },
  { "command": "find", "keys": "ctrl+shift+f" },
  // Tab Management
  