doc: update one more command in crypto.md

shobhitchittora · vsemozhetbyt · commit 5efbe4c1e8f9 · 2018-05-07T04:09:28.000+03:00
PR-URL: #20500 Refs: #20400 Reviewed-By: Tobias Nießen <tniessen@tnie.de> Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
diff --git a/doc/api/crypto.md b/doc/api/crypto.md
@@ -1626,7 +1626,8 @@ Optional `options` argument controls stream behavior.
 
 The `algorithm` is dependent on the available algorithms supported by the
 version of OpenSSL on the platform. Examples are `'sha256'`, `'sha512'`, etc.
-On recent releases of OpenSSL, `openssl list-message-digest-algorithms` will
+On recent releases of OpenSSL, `openssl list -digest-algorithms`
+(`openssl list-message-digest-algorithms` for older versions of OpenSSL) will
 display the available digest algorithms.
 
 The `key` is the HMAC key used to generate the cryptographic HMAC hash.
