Fix return error description validate_ip helper function

Co-authored-by: Damiano Albani <damiano.albani@gmail.com>
Signed-off-by: Louis <covert8@users.noreply.github.com>

bitnami/keycloak/21/debian-11/rootfs/opt/bitnami/scripts/libkeycloak.sh

@@ -74,7 +74,7 @@ keycloak_validate() {
 
     if ! validate_ip "${KEYCLOAK_BIND_ADDRESS}"; then
         if ! is_hostname_resolved "${KEYCLOAK_BIND_ADDRESS}"; then
-            print_validation_error print_validation_error "The value for KEYCLOAK_BIND_ADDRESS ($KEYCLOAK_BIND_ADDRESS) should be an IPv4 address or it must be a resolvable hostname"
+            print_validation_error print_validation_error "The value for KEYCLOAK_BIND_ADDRESS ($KEYCLOAK_BIND_ADDRESS) should be an IPv4 or IPv6 address, or it must be a resolvable hostname"
         fi
     fi