Add docs and add bind for hyprshot

.config/hypr/hyprland.conf

@@ -186,6 +186,7 @@ bind = $mainMod, T, exec, Telegram
 bind = $mainMod, B, exec, $browser
 bind = $mainMod, O, exec, obsidian
 bind = $mainMod, L, exec, hyprlock
+bind = $mainMod, delete, exec, hyprshot -m output
 bind = $mainMod, C, killactive,
 bind = $mainMod, M, exit,
 bind = $mainMod, D, exec, $fileManager