readme update

README.md

@@ -16,7 +16,7 @@ The `results` folder contains 2 performance test data and 1 correctness test dat
 
 ## Code
 
-Part of the code (`aes256.c`, `camellia256.c` and `sm4.c`) contains part of source code from [OpenSSL](https://github.com/openssl/openssl), in order to give best performance of each standard algorithm. Codes are modified to fit into the same structure with the proposed algorithm.
+Part of the code (`validation/aes256.c`, `validation/camellia256.c` and `validation/sm4.c`) contains part of source code from [OpenSSL](https://github.com/openssl/openssl), in order to give best performance of each standard algorithm. Codes are modified to fit into the same structure with the proposed algorithm.
 
 ## Copyright