message: trivial: fix typo commmon in data_dir in default config
  Closes:
diff: @@ -102,7 +102,7 @@ pub struct BaseConfig {
  impl Default for BaseConfig {
  fn default() -> BaseConfig {
  BaseConfig {
  - data_dir: PathBuf::from("/opt/libra/data/commmon"),
  + data_dir: PathBuf::from("/opt/libra/data/common"),
  chain_id: ChainId::test(),
  role: RoleType::Validator,
  waypoint: WaypointConfig::None,
  