chore: minor updates to help text for bazzite-rollback-helper (#1540)

Co-authored-by: Aarron Lee <[email protected]>

system_files/desktop/shared/usr/bin/bazzite-rollback-helper

@@ -26,9 +26,11 @@ Examples:
   bazzite-rollback-helper list stable
   bazzite-rollback-helper rollback
   bazzite-rollback-helper current
-  bazzite-rollback-helper rebase bazzite-deck:39-20240315
+  bazzite-rollback-helper rebase 40-stable-20240722
+  bazzite-rollback-helper rebase bazzite-deck:40-stable-20240722
   bazzite-rollback-helper rebase bazzite-deck:stable
   bazzite-rollback-helper rebase stable
+  bazzite-rollback-helper rebase testing
 
 For more help, visit https://discord.bazzite.gg.
 
@@ -47,6 +49,7 @@ if [[ "$1" == "list" ]]; then
 
 elif [[ "$1" == "rollback" ]]; then
   rpm-ostree rollback
+  echo "Reboot for changes to take effect"
 
 elif [[ "$1" == "current" ]]; then
   # current image
@@ -76,7 +79,7 @@ EOF
 )
   read -p "$question" yn
   case $yn in
-      [Yy]) echo "rebasing to $rebase_target" && rpm-ostree rebase $full_image_path;;
+      [Yy]) echo "rebasing to $rebase_target" && rpm-ostree rebase $full_image_path &&  echo "Reboot for changes to take effect";;
       *) echo "Unknown option, exiting.";;
   esac