Custom pluralization rule is not working

Reporting a bug?

Hi, I am trying to use custom pluralization function but it seems it is not working as expected:

The result is:

<p>1 машина</p>
<p>2 машины</p>
<p>4 машины</p>
<p>12 машины</p>
<p>21 машины</p>

Expected behavior

<p>1 машина</p>
<p>2 машины</p>
<p>4 машины</p>
<p>12 машин</p>
<p>21 машина</p>

12 and 21 result is wrong.

Reproduction

https://github.com/RollingTL/Testing-intlify-vue-i18n-next-custom-pluralization

System Info

Mac OS

Screenshot

No response

Additional context

No response

Validations

• Read the Contributing Guidelines
• Read the Documentation
• Check that there isn’t already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion
• The provided reproduction is a minimal reproducible example of the bug.

[FADL285]

The problem is still found instead of ‘pluralizationRules’ as in documentation it should be ‘pluralRules’

or change the code to be pluralizationRules

[RollingTL]

After reading sources I have found the problem Instead of pluralizationRules as in documentation the option should be pluralRules.

const i18n = createI18n({
  locale: 'ru',
  // the custom rules here ...
  **pluralRules**: {
    ru: customRule
  },
  messages: {
    ru: {
      car: '0 машин | {n} машина | {n} машины | {n} машин',
      banana: 'нет бананов | {n} банан | {n} банана | {n} бананов'
    }
  }
})

It is necessary to change documentation to fit source or source to fit documentation.