docs(nx-cloud): clarify encryption docs (#15391)

docs/nx-cloud/account/encryption.md

@@ -2,12 +2,11 @@
 
 Data is encrypted both at rest and in transit.
 
-- Every communication with the Nx Cloud API is encrypted, including fetching/storing artifacts.
+- Every communication with the Nx Cloud API is encrypted in transit, including fetching/storing artifacts.
 - When using Nx Public Cloud, the stored metadata is encrypted.
-- When using Nx Public Cloud, stored artifacts are encrypted using e2e encryption.
-- When using the on-prem version of Nx Cloud, the stored metadata is encrypted if you run MongoDB yourself with
-  encryption on (or if you, for instance, use CosmosDB)
+- When using Nx Public Cloud and e2e encryption, stored artifacts are encrypted.
+- When using the on-prem version of Nx Cloud, the stored metadata is encrypted if you run MongoDB yourself with encryption on (or if you, for instance, use CosmosDB)
 - When using the on-prem version of Nx Cloud, stored artifacts are encrypted using e2e encryption.
 
 You can set the `encryptionKey` property in `nx.json` or set the `NX_CLOUD_ENCRYPTION_KEY` environment variable to
-enable the e2e encryption of your artifacts. In this case, the artifacts will be encrypted/encrypted on your machine.
+enable the e2e encryption of your artifacts. In this case, the artifacts will be encrypted/decrypted on your machine.