Minor ARIA documentation improvements
diff --git a/include/mbedtls/aria.h b/include/mbedtls/aria.h
index bd99b9f..3db4376 100644
--- a/include/mbedtls/aria.h
+++ b/include/mbedtls/aria.h
@@ -99,7 +99,7 @@
* \brief This function releases and clears the specified ARIA context.
*
* \param ctx The ARIA context to clear. This may be \c NULL, in which
- * case this function is a no-op. If it is not \c NULL,
+ * case this function returns immediately. If it is not \c NULL,
* it must point to an initialized ARIA context.
*/
void mbedtls_aria_free( mbedtls_aria_context *ctx );
@@ -328,14 +328,14 @@
* \param ctx The ARIA context to use for encryption or decryption.
* This must be initialized and bound to a key.
* \param length The length of the input data \p input in Bytes.
- * \param nc_off The offset in the current \p stream_block, for
- * resuming within the current cipher stream. The
- * offset pointer should be 0 at the start of a stream.
- * This must not be larger than 15.
+ * \param nc_off The offset in Bytes in the current \p stream_block,
+ * for resuming within the current cipher stream. The
+ * offset pointer should be \c 0 at the start of a
+ * stream. This must not be larger than \c 15 Bytes.
* \param nonce_counter The 128-bit nonce and counter. This must point to
- * an RW-buffer of length 16 bytes.
+ * a read/write buffer of length \c 16 bytes.
* \param stream_block The saved stream block for resuming. This must
- * point to an RW-buffer of length 16 bytes.
+ * point to a read/write buffer of length \c 16 bytes.
* This is overwritten by the function.
* \param input The buffer holding the input data.
* This may be \c NULL if `length == 0`.