checkpatch: reword long-line warning about commit-msg

Reword the warning to complain about line length 1st, since thats
whats actually tested.

Link: https://lkml.kernel.org/r/20230808033019.21911-3-jim.cromie@gmail.com
Cc: apw@canonical.com
Cc: joe@perches.com
Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

scripts/checkpatch.pl

@@ -3272,7 +3272,7 @@ sub process {
 					# A Fixes:, link or signature tag line
 		      $commit_log_possible_stack_dump)) {
 			WARN("COMMIT_LOG_LONG_LINE",
-			     "Possible unwrapped commit description (prefer a maximum 75 chars per line)\n" . $herecurr);
+			     "Prefer a maximum 75 chars per line (possible unwrapped commit description?)\n" . $herecurr);
 			$commit_log_long_line = 1;
 		}