Update documentation for --secure and --insecure

agunua.md

@@ -17,10 +17,10 @@ And you will get the URL content.
 
 * `--maximum-time`: maximum time in seconds before giving in if the
   server does not respond
-* `--insecure`: do not check the certificate
+* `--secure`: checks the certificate
 * `--no-tofu`: do not perform TOFU (Trust On First Use) validation
-* `--accept-expired-certificate`:  even with `--insecure`, expired
-  certificates are not accepted unless you use also this option
+* `--accept-expired-certificate`: expired certificates are not
+  accepted unless you use also this option
 * `--no-sni`: do not send TLS Server Name Indication
 * `--not-follow-redirect`: by default, the tool follows Gemini
   redirections but you can use this option to avoid it