Use proper doxygen markup to mark deprecations
diff --git a/include/polarssl/pbkdf2.h b/include/polarssl/pbkdf2.h
index 5c06bfb..e842c83 100644
--- a/include/polarssl/pbkdf2.h
+++ b/include/polarssl/pbkdf2.h
@@ -2,7 +2,8 @@
* \file pbkdf2.h
*
* \brief Password-Based Key Derivation Function 2 (from PKCS#5)
- * DEPRECATED: use pkcs5.h instead.
+ *
+ * \deprecated Use pkcs5.h instead.
*
* \author Mathias Olsson <mathias@kompetensum.com>
*
@@ -46,7 +47,8 @@
/**
* \brief PKCS#5 PBKDF2 using HMAC
- * DEPRECATED: Use pkcs5_pbkdf2_hmac() instead!
+ *
+ * \deprecated Use pkcs5_pbkdf2_hmac() instead
*
* \param ctx Generic HMAC context
* \param password Password to use when generating key
@@ -66,7 +68,8 @@
/**
* \brief Checkup routine
- * DEPRECATED: Use pkcs5_self_test() instead!
+ *
+ * \deprecated Use pkcs5_self_test() instead
*
* \return 0 if successful, or 1 if the test failed
*/