Feature/4292 fix capitalisation on initial sync screen

[AdamTomaja]

Simple change fixing some texts on initial sync screen

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
• Accessibility has been taken into account. See https://github.com/vector-im/element-android/blob/develop/CONTRIBUTING.md#accessibility
• 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
• You've made a self review of your PR
• If you have modified the screen flow, or added new screens to the application, you have updated the test UiAllScreensSanityTest.allScreensTest()

[bmarty]

Thanks for your PR. Can you fix some remaining capitalisations please?

[ouchadam]

@bmarty how do we want to handle the other locales with similar issues, should we raise separate issues for them?

[AdamTomaja]

Thanks for your PR. Can you fix some remaining capitalisations please?

done :)

[bmarty]

Thanks for the update!
Will be in release 1.3.7