update jdupes command line option spelling

archiver/checks/default_preparation_checks.ini

@@ -50,7 +50,7 @@ check_failure_msg=Found files looking like temporary files not potentially not n
 precondition=printf "%%s\n%%s\n" "1.19" "$(jdupes -v | sed -E -n 's/.*jdupes ([1-9].[0-9]+).*/\1/p')" | sort -V -c
 # need version 1.19 since semantics of filters have changed with that version.
 precondition_failure_msg=jdupes could not be executed sucessfully, need at least version 1.19. Is it installed?
-check_cmd=jdupes -X size+=:1M --hardlinks --recurse --printwithsummary .
+check_cmd=jdupes -X size+=:1M --hard-links --recurse --print-summarize .
 success_conditions=RETURN_ZERO, CONTAINS("No duplicates found.")
 check_failure_msg=Found some larger duplicate files.
- Review the output and consider running 'jdupes -X size+=:1M --hardlinks --recurse --linksoft {WDIR}' to softlink duplicate files to save space.
+ Review the output and consider running 'jdupes -X size+=:1M --hard-links --recurse --link-soft {WDIR}' to softlink duplicate files to save space.