Command docs: fix some engine references

"gost" was called "ccgost".
"rsax" was treated like literal input rather than an engine name.
Reviewed-by: NTomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10065)

doc/man1/openssl-ciphers.pod

@@ -497,7 +497,8 @@ e.g. DES-CBC3-SHA. In these cases, RSA authentication is used.
 =head2 GOST cipher suites from draft-chudov-cryptopro-cptls, extending TLS v1.0
 
 Note: these ciphers require an engine which including GOST cryptographic
-algorithms, such as the B<ccgost> engine, included in the OpenSSL distribution.
+algorithms, such as the B<gost> engine, which isn't part of the OpenSSL
+distribution.
 
  TLS_GOSTR341094_WITH_28147_CNT_IMIT GOST94-GOST89-GOST89
  TLS_GOSTR341001_WITH_28147_CNT_IMIT GOST2001-GOST89-GOST89

doc/man1/openssl-dgst.pod

@@ -130,7 +130,7 @@ option.
 Create MAC (keyed Message Authentication Code). The most popular MAC
 algorithm is HMAC (hash-based MAC), but there are other MAC algorithms
 which are not based on hash, for instance B<gost-mac> algorithm,
-supported by B<ccgost> engine. MAC keys and other options should be set
+supported by the B<gost> engine. MAC keys and other options should be set
 via B<-macopt> parameter.
 
 The L<openssl-mac(1)> command should be preferred to using this command line

doc/man1/openssl-engine.pod

@@ -87,7 +87,7 @@ To list all the commands available to a dynamic engine:
       LOAD: Load up the ENGINE specified by other settings
            (input flags): NO_INPUT
 
-To list the capabilities of the I<rsax> engine:
+To list the capabilities of the B<rsax> engine:
 
  $ openssl engine -c
  (rsax) RSAX engine support