message: fix(dev-infra): correct FormatConfig interface
  Correct the FormatConfig interface to use `[key: string]` instead of the incorrect
  `[keyof: string]`.
  PR Close
diff: @@ -13,7 +13,7 @@ interface Formatter {
  }
  export interface FormatConfig {
  - [keyof: string]: boolean|Formatter;
  + [key: string]: boolean|Formatter;
  }
  /** Retrieve and validate the config as `FormatConfig`. */
  