Refactor code-style

Author: wooorm

lib/index.js

@@ -4,11 +4,11 @@
  * @typedef Options
  *   Configuration.
  * @property {boolean | null | undefined} [allowDashes=false]
- *   Do not strip hyphens (`-`).
+ *   Do not strip hyphens (`-`) (default: `false`).
  *
  *   The default is to remove the hyphen-minus character.
  * @property {boolean | null | undefined} [allowApostrophes=false]
- *   Do not strip apostrophes (`'`).
+ *   Do not strip apostrophes (`'`) (default: `false`).
  *
  *   The default is to remove apostrophes.
  */
@@ -24,7 +24,7 @@ import {toString} from 'nlcst-to-string'
  * @param {Array<Nodes> | Nodes | string} value
  *   Word.
  * @param {Options | null | undefined} [options]
- *   Configuration.
+ *   Configuration (optional).
  * @returns {string}
  *   Normalized word.
  */