Update docs for ftp_ssl_connect about missing verification (GH-3915)

Change/Clarify that at the moment no verification is happening at all

Co-authored-by: Christoph M. Becker <cmbecker69@gmx.de>

Author: kronthto

reference/ftp/functions/ftp-ssl-connect.xml

@@ -17,10 +17,10 @@
    <function>ftp_ssl_connect</function> opens an <emphasis>explicit</emphasis> SSL-FTP connection to the
    specified <parameter>hostname</parameter>. That implies that
    <function>ftp_ssl_connect</function> will succeed even if the server is not
-   configured for SSL-FTP, or its certificate is invalid. Only when
-   <function>ftp_login</function> is called, the client will send the
-   appropriate AUTH FTP command, so <function>ftp_login</function> will fail in
-   the mentioned cases.
+   configured for SSL-FTP. Only when <function>ftp_login</function> is called, the client will send the
+   appropriate AUTH FTP command, so <function>ftp_login</function> will fail.
+   The connection established by <function>ftp_ssl_connect</function> will <emphasis>not</emphasis> do
+   peer-certificate verification.
   </para>
   <note>
    <title>Why this function may not exist</title>