Update create by resource example to generate key pair
As Operator 4.3 moved to using ssh keypairs, so too did
this example need to be updated. Fixes
Issue:
@@ -42,7 +42,7 @@ rm $DIR/fromcrd-key $DIR/fromcrd-key.pub
###############
# generate a SSH public/private keypair for use by pgBackRest
-ssh-keygen -N '' -f $DIR/fromcrd-key
+ssh-keygen -t ed25519 -N '' -f $DIR/fromcrd-key
# base64 encoded the keys for the generation of the Kube secret, and place
# them into variables temporarily
