fixed swapped parameter descriptions for x509

CLA: trivial
Reviewed-by: NShane Lontis <shane.lontis@oracle.com>
Reviewed-by: NDmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/12482)

apps/x509.c

@@ -117,9 +117,9 @@ const OPTIONS x509_options[] = {
     {"C", OPT_C, '-', "Print out C code forms"},
 #ifndef OPENSSL_NO_MD5
     {"subject_hash_old", OPT_SUBJECT_HASH_OLD, '-',
-     "Print old-style (MD5) issuer hash value"},
-    {"issuer_hash_old", OPT_ISSUER_HASH_OLD, '-',
      "Print old-style (MD5) subject hash value"},
+    {"issuer_hash_old", OPT_ISSUER_HASH_OLD, '-',
+     "Print old-style (MD5) issuer hash value"},
 #endif
     {"nameopt", OPT_NAMEOPT, 's', "Certificate subject/issuer name printing options"},