i18n: Change text string

[Valdnet]

@marinofaggiana I standardize text strings in Transifex and the following text string should be changed:

ios/iOSClient/Supporting Files/en-GB.lproj/Localizable.strings

Line 410 in 1b9c2b8

"_login_url_" = "Server address https:// …";

I'd do it myself, but I'm doing it via GitHub where there's a coding problem. Can you change this text string to:
Server address https://….

In this string, remove the space before the ellipsis. Thanks 😉.