chore(readme): update usage example

Author: ndavd

README.md

@@ -53,15 +53,15 @@ confirm identity passphrase:
 
 ```
 $ agevault my-vault lock
-my-vault SECURED with age14tpkpl6vexufah8eq5dgrd5zy4xqs4slynh26j5n7gvxs87xhguqwu9zqc
+my-vault LOCKED with age14tpkpl6vexufah8eq5dgrd5zy4xqs4slynh26j5n7gvxs87xhguqwu9zqc
 ```
 
 3. Unlock vault
 
 ```
 $ agevault my-vault unlock
 enter passphrase for identity file ".age14tpkpl6vexufah8eq5dgrd5zy4xqs4slynh26j5n7gvxs87xhguqwu9zqc.my-vault.key.age": 
-my-vault DECRYPTED
+my-vault UNLOCKED
 ```
 
 4. That's it. Do your changes, lock it again, etc.