Fix typo in doc and copy missing warning
diff --git a/include/mbedtls/aria.h b/include/mbedtls/aria.h
index 04f9240..bae0621 100644
--- a/include/mbedtls/aria.h
+++ b/include/mbedtls/aria.h
@@ -289,7 +289,7 @@
* Note that for both stategies, sizes are measured in blocks and
* that an ARIA block is 16 bytes.
*
- * \warning Upon return, \p stream_block constains sensitive data. Its
+ * \warning Upon return, \p stream_block contains sensitive data. Its
* content must not be written to insecure storage and should be
* securely discarded as soon as it's no longer needed.
*