Update SSL_CONF docs.

Fix some typos and update version number first added: it has now been
backported to OpenSSL 1.0.2.

doc/ssl/SSL_CONF_cmd.pod

diff --git a/doc/ssl/SSL_CONF_cmd.pod b/doc/ssl/SSL_CONF_cmd.pod
index 0fbf0d7..5952072 100644
--- a/doc/ssl/SSL_CONF_cmd.pod
+++ b/doc/ssl/SSL_CONF_cmd.pod
@@ -312,7 +312,7 @@
 
 =head1 RETURN VALUES
 
-SSL_CONF_cmd() return 1 if the value of B<cmd> is recognised and B<value> is
+SSL_CONF_cmd() returns 1 if the value of B<cmd> is recognised and B<value> is
 B<NOT> used and 2 if both B<cmd> and B<value> are used. In other words it
 returns the number of arguments processed. This is useful when processing
 command lines.
@@ -337,6 +337,6 @@
 
 =head1 HISTORY
 
-SSL_CONF_cmd() was first added to OpenSSL 1.1.0
+SSL_CONF_cmd() was first added to OpenSSL 1.0.2
 
 =cut