i18n: Use int: in message "resetpass-expired-soft"

Spotted by Siddhartha Ghai
https://translatewiki.net/wiki/Thread:Support/About_MediaWiki:Resetpass-expired-soft/en

Also replaced "to login" with "to log in" in message "resetpass-expired".

Follows-up 01c8c421f8bc.

Change-Id: I8fc039ab1867a5bc5a0ade94daad49d9d85edd98
Merge "i18n: Use int: in message "resetpass-expired-soft""