docs(isStringType): update jsdoc

Author: sciborrudnicki

packages/type/src/is/lib/is-string-type.func.ts

@@ -8,7 +8,7 @@ import { ResultCallback } from '../../type/result-callback.type';
  * @param value Any `value` to check.
  * @param callback `ResultCallback` function to handle result before returns.
  * @callback `resultCallback`.
- * @returns A `boolean` indicating whether or not the value is a `string`.
+ * @returns A `boolean` indicating whether or not the value is a `string` type.
  */
 export const isStringType: IsStringType = (value: any, callback: ResultCallback = resultCallback): value is string =>
   callback(value instanceof Object === false && value instanceof String === false && typeof value === 'string', value);