Merge pull request #2430 from MikeMcC399/update-script-help

fix: correct update.sh script help

Author: nschonni

update.sh

@@ -11,16 +11,15 @@ function usage() {
     $0 [-s] [MAJOR_VERSION(S)] [VARIANT(S)]
 
   Examples:
-    - update.sh                      # Update all images
-    - update.sh -s                   # Update all images, skip updating Alpine if the musl build isn't available
-    - update.sh 8,10                 # Update all variants of version 8 and 10
-    - update.sh -s 8                 # Update version 8 and variants, skip updating Alpine if the musl build isn't available
-    - update.sh 8 alpine             # Update only alpine's variants for version 8
-    - update.sh -s 8 bullseye        # Update only bullseye variant for version 8, skip updating Alpine if the musl build isn't available
-    - update.sh . alpine             # Update the alpine variant for all versions
+    - update.sh                           # Update all images
+    - update.sh -s                        # Update all images, skip updating Alpine if the musl build is unavailable
+    - update.sh 22,24                     # Update all variants of version 22 and 24
+    - update.sh -s 24                     # Update all variants of version 24, except skip updating Alpine if the musl build is unavailable
+    - update.sh 24 alpine3.22,alpine3.23  # Update only alpine3.22 & alpine3.23 variants for version 24
+    - update.sh . trixie,trixie-slim      # Update only trixie & trixie-slim Debian variants for all versions
 
   OPTIONS:
-    -s Security update; skip updating the Alpine versions.
+    -s Security update; allows Debian updates even if musl build for Alpine is unavailable
     -h Show this message
 
 EOF