NOISSUE Fix strings

[KatieFrogs]

While localizing the launcher to Polish, I have encountered some issues in the source strings

• Typos
• Casual language, referring to the user as "You"
• Wrong capitalization
• Arguments (%1) not being used
• Not being able to translate URLs (e.g. to change /en-us/ to /pl-pl/)
• Question marks in checkbox labels

This PR fixes some of the strings I had issues with

[KatieFrogs]

There is also this mysterious string that just says "Got ", which I assume gets printed into console: launcher/minecraft/auth/steps/MSAStep.cpp:86