docs: in google.cloud.kms.v1.PublicKey, pem field is always populated

PiperOrigin-RevId: 625414261

google/cloud/kms/v1/resources.proto

@@ -651,12 +651,10 @@ message PublicKey {
     pattern: "projects/{project}/locations/{location}/keyRings/{key_ring}/cryptoKeys/{crypto_key}/cryptoKeyVersions/{crypto_key_version}/publicKey"
   };
 
-  // A public key encoded in PEM format, populated only when
-  // [GetPublicKey][google.cloud.kms.v1.KeyManagementService.GetPublicKey]
-  // returns one key. For more information, see the [RFC
-  // 7468](https://tools.ietf.org/html/rfc7468) sections for [General
-  // Considerations](https://tools.ietf.org/html/rfc7468#section-2) and [Textual
-  // Encoding of Subject Public Key Info]
+  // The public key, encoded in PEM format. For more information, see the
+  // [RFC 7468](https://tools.ietf.org/html/rfc7468) sections for
+  // [General Considerations](https://tools.ietf.org/html/rfc7468#section-2) and
+  // [Textual Encoding of Subject Public Key Info]
   // (https://tools.ietf.org/html/rfc7468#section-13).
   string pem = 1;
 
@@ -665,10 +663,8 @@ message PublicKey {
   // associated with this key.
   CryptoKeyVersion.CryptoKeyVersionAlgorithm algorithm = 2;
 
-  // Integrity verification field: A CRC32C checksum of the returned
-  // [PublicKey.pem][google.cloud.kms.v1.PublicKey.pem]. It is only populated
-  // when [GetPublicKey][google.cloud.kms.v1.KeyManagementService.GetPublicKey]
-  // returns one key. An integrity check of
+  // Integrity verification field. A CRC32C checksum of the returned
+  // [PublicKey.pem][google.cloud.kms.v1.PublicKey.pem]. An integrity check of
   // [PublicKey.pem][google.cloud.kms.v1.PublicKey.pem] can be performed by
   // computing the CRC32C checksum of
   // [PublicKey.pem][google.cloud.kms.v1.PublicKey.pem] and comparing your