Merge pull request #123241 from isdaniel/update-concepts-networking-ssl-tls.md

Update concepts-networking-ssl-tls.md

Author: Court72

articles/postgresql/flexible-server/concepts-networking-ssl-tls.md

@@ -128,7 +128,7 @@ To update client applications in certificate pinning scenarios, you can download
 To import certificates to client certificate stores you may have to **convert certificate .crt files to .pem format**, after downloading certificate files from URIs above. You can use OpenSSL utility to do these file conversions, as shown in example below:
 
 ```powershell
-openssl x509 -in certificate.crt -out certificate.pem -outform PEM
+openssl x509 -inform DER -in certificate.crt -out certificate.pem -outform PEM
 ```
 
 **Detailed information on updating client applications certificate stores with new Root CA certificates has been documented in this [how-to document](../flexible-server/how-to-update-client-certificates-java.md)**.