Spelling errors.

PR: 538

doc/ssl/SSL_CTX_set_options.pod

@@ -176,7 +176,7 @@ will send his list of preferences to the client and the client chooses.
 =item SSL_OP_NETSCAPE_CA_DN_BUG
 
 If we accept a netscape connection, demand a client cert, have a
-non-self-sighed CA which does not have it's CA in netscape, and the
+non-self-signed CA which does not have its CA in netscape, and the
 browser has a cert, it will crash/hang.  Works for 3.x and 4.xbeta 
 
 =item SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG