pages.pt_BR/linux/*: update commands, descriptions, translations, and paths for multiple commands (#13800)

* bluetoothd: update on command path

* bspwm: update whole translation and all of its commands

* btrfs: update command order accordingly to styleguide

* dunstify: last example was refering to another command

* flatpak: - update description's verbs tenses to match styleguide
- remove command
- update app's names on commands

* lsblk: update commands' arguments

* pi: update commands order to match the styleguide

* poweroff: fix duplicated parameter

* systemctl: - update commands' descriptions
- add new commands

---------

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

pages/linux/dunstify.md

@@ -18,4 +18,4 @@
 
 - Display help:
 
-`notify-send --help`
+`dunstify --help`