Make sure the documentation matches reality.

PR: 755
Notified by: Jakub Bogusz <qboosh@pld-linux.org>

doc/ssl/SSL_COMP_add_compression_method.pod

@@ -53,11 +53,11 @@ SSL_COMP_add_compression_method() may return the following values:
 
 =over 4
 
-=item 1
+=item 0
 
 The operation succeeded.
 
-=item 0
+=item 1
 
 The operation failed. Check the error queue to find out the reason.