docs(samples): fixed comment (#726)

Author: Sita04

samples/snippets/src/main/java/kms/DisableKeyVersion.java

@@ -61,7 +61,7 @@ public void disableKeyVersion(
  // Create a field mask of updated values.
  FieldMask fieldMask = FieldMaskUtil.fromString("state");
 
- // Destroy the key version.
+ // Disable the key version.
  CryptoKeyVersion response = client.updateCryptoKeyVersion(keyVersion, fieldMask);
  System.out.printf("Disabled key version: %s%n", response.getName());
  }

samples/snippets/src/main/java/kms/EnableKeyVersion.java

@@ -61,7 +61,7 @@ public void enableKeyVersion(
  // Create a field mask of updated values.
  FieldMask fieldMask = FieldMaskUtil.fromString("state");
 
- // Destroy the key version.
+ // Enable the key version.
  CryptoKeyVersion response = client.updateCryptoKeyVersion(keyVersion, fieldMask);
  System.out.printf("Enabled key version: %s%n", response.getName());
  }