Fix the readme

[svenska-primekey]

Describe the Bug

The readme steps for creating a secret for the certs for no active CA has the wrong filename. The filename should be ejbca-node1.ejbca-CA.pem, ejbca-node1.ejbca.pem, & ejbca-node1.ejbca-Key.pem.

To Reproduce
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Expected Behavior

Proper documentation

Screenshots and Logs

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Product Deployment

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Desktop

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Additional Context

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