Add key-type argument to the command OR change the default type

[rravula-ionos]

Hi
I have noticed without the key-type argument, during certificate generation by default the key-type is ecdsa.
Our IONOS cloud certmanager API accepts only the key-type rsa to store the generated certificate.

Please include this argument in the example script or It would be nice to document while using ionos cloud certmanager use this argument --key-type rsa.

Another Option:
if possible, change the default key-type to RSA in source code.

Thanks