doxygen fix

src/preferences/preferences.hpp

@@ -772,13 +772,13 @@ class prefs
 
         std::string get_system_username();
         /**
-         * Encrypts the value of @a plaintext using @a key and a hard coded IV using AES.
-         * Max size of @a plaintext must not be larger than 1008 bytes.
+         * Encrypts the value of @a text using @a key and a hard coded IV using AES.
+         * Max size of @a text must not be larger than 1008 bytes.
          *
          * NOTE: This is not meant to provide strong protections against a determined attacker.
          * This is meant to hide the passwords from malware scanning files for passwords, family/friends poking around, etc.
          *
-         * @param plaintext The original unencrypted data.
+         * @param text The original unencrypted data.
          * @param key The value to use to encrypt the data. See build_key() for key generation.
          * @return secure_buffer The encrypted data.
          */