correct plural forms for week and millisecond in relative date phrases

[sigmade]

Here is a checklist you should tick through before submitting a pull request:

• Implementation is clean
• Code adheres to the existing coding standards; e.g. no curlies for one-line blocks, no redundant empty lines between methods or code blocks, spaces rather than tabs, etc.
• No Code Analysis warnings
• There is proper unit test coverage
• If the code is copied from StackOverflow (or a blog or OSS) full disclosure is included. That includes required license files and/or file headers explaining where the code came from with proper attribution
• There are very few or no comments (because comments shouldn't be needed if you write clean code)
• Xml documentation is added/updated for the addition/change
• Your PR is (re)based on top of the latest commits from the main branch (more info below)
• Link to the issue(s) you're fixing from your PR description. Use fixes #<the issue number>
• Readme is updated if you change an existing feature or add a new one
• Run either build.cmd or build.ps1 and ensure there are no test failures

[Copilot]

Pull request overview

This PR updates Russian (ru) relative date phrase data so that week and millisecond use correct Russian grammatical-number forms (e.g., 2 недели, 2 миллисекунды) and adds regression coverage in the localisation phrase theory tests.

Changes:

• Extend ru relative date phrase definitions for week and millisecond to use form maps (default/singular/dual) instead of a single plural form.
• Add localisation theory test cases validating past/future phrasing for 1, 2, and 7 weeks/milliseconds in ru.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
tests/Humanizer.Tests/Localisation/LocalePhraseTheoryData.cs	Adds RU test cases for week/millisecond relative date phrases to verify corrected grammatical forms.
src/Humanizer/Locales/ru.yml	Updates RU relativeDate week and millisecond multiple.forms to support Russian singular/paucal/default selection.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

This PR adjusts Russian locale phrase data to use grammar-aware plural forms for relative date phrases so that counted expressions (e.g., “через 2 …”) use the correct Russian inflections.

Changes:

• Updated ru.yml relative-date phrases for week and millisecond to provide default/singular/dual forms instead of a single scalar form.
• Updated the generated locale migration test to assert the presence of the Russian dual form for week in the phrase table.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
tests/Humanizer.Tests/Localisation/GeneratedLocaleData/GeneratedLocaleDeRuPhraseMigrationTests.cs	Updates expectations to validate the added Russian dual form for weeks in the phrase table.
src/Humanizer/Locales/ru.yml	Adds grammar-aware plural forms for Russian relative-date weeks/milliseconds (past & future).

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.