[🐴] Copy tweaks (#4042)

* `notifications` -> `conversation`

* `users` -> `people`

* `other participants` -> `the other participant`

* rename

src/screens/Messages/Settings.tsx

@@ -62,7 +62,7 @@ export function MessagesSettingsScreen({}: Props) {
           }
           items={[
             {label: _(msg`Everyone`), value: 'all'},
-            {label: _(msg`People I Follow`), value: 'following'},
+            {label: _(msg`Users I follow`), value: 'following'},
             {label: _(msg`No one`), value: 'none'},
           ]}
           onSelect={onSelectItem}