grammar: Server matching ... -> Servers matching ...

[anoadragon453]

This commit uses the plural form of Server as each message is talking about one or more servers in the room.

I'm not sure whether this requires additional changes for i18n support. I have also not tested this change in the emulator.

Pull Request Checklist

• Changes has been tested on an Android device or Android emulator with API 21
• UI change has been tested on both light and dark themes
• Pull request is based on the develop branch
• Pull request includes a new file under ./changelog.d. See https://github.com/vector-im/element-android/blob/develop/CONTRIBUTING.md#changelog
• Pull request includes screenshots or videos if containing UI changes
• Pull request includes a sign off

Signed-off-by: Andrew Morgan <andrewm@element.io>

[bmarty]

Thanks for the PR. The translations will be updated if necessary from Weblate, so no more work needed on your side.