* docs: user guide for the 7.1 apps
* docs, website: guide order, badge benefits, message expiry; soft line breaks on the site
* docs: guide videos for the first profile, invitations, joining and the address
* docs: guide screens with the iPhone status bar
* docs: guide shows full and cut screens only
* docs: guide pages corrected in place, keeping master's structure
* docs: group chat and SimpleX address pictures in the iPhone frame
* docs: plainer wording in the guide
* docs: guide checked against how SimpleX explains its features
* docs: guide answers on profiles, channel privacy, SOCKS and names
* docs: android guide picture from the emulator in the pixel 7 frame
Fix spelling, grammar, and punctuation issues across documentation
and website content including subject-verb agreement, missing articles,
typos, and broken code snippets.