Change languages to String array type in UpdateServicesServer Get-TargetResource return value

[jortencio]

Pull Request (PR) description

Updates the returned value for the languages value in the return value for UpdateServicesServer Get-TargetResource function

This Pull Request (PR) fixes the following issues

Fixes #76

Task list

• Added an entry under the Unreleased section of the change log in the CHANGELOG.md.
  Entry should say what was changed, and how that affects users (if applicable).
• Resource documentation added/updated in README.md.
• Resource parameter descriptions added/updated in README.md, schema.mof
  and comment-based help.
• Comment-based help added/updated.
• Localization strings added/updated in all localization files as appropriate.
• Examples appropriately added/updated.
• Unit tests added/updated. See DSC Resource Testing Guidelines.
• Integration tests added/updated (where possible). See DSC Resource Testing Guidelines.
• New/changed code adheres to DSC Resource Style Guidelines and Best Practices.

---

This change is 

[NicolasBn]

Hello @jortencio thanks for your contribution.
Can you complete the CHANGELOG.md file ?

[jortencio]

Hi @NicolasBn , I have updated the CHANGELOG.md file as requested to reflect the changes in this PR.

[NicolasBn]

Hi @jortencio thank you for your change.
In your issue @sooyean-hoo referenced the same issue with Products collection. Can you add this fix in your PR? And maybe added some pester tests to cover your changes?

[jortencio]

Hi @NicolasBn as requested I have added pester tests to cover my changes. Regarding the products collection, I had a brief look and there doesn't seem to be an issue with the implementation for it.