fix README

Author: Yu-Ma28051503

README.md

@@ -161,11 +161,11 @@ wolfssl verify -CAfile A.cert C.cert
 
 Following is a scenario creating Chimera (dual algorithms) certificates for PQC(Post Quantum Cryptography).
 
-The following demonstrates how to create a root CA and use it to sign other certificates. This example uses ECC and ML-DSA. In this scenario there are three entities A, B, and C, where A is meant to function as a root CA. 
+The following demonstrates how to create a root CA and use it to sign other certificates. This example uses ECC and ML-DSA. In this scenario there are three entities A, B, and C, where A is meant to function as a root CA, and B is assumed to be an intermediate CA.
 
 Before running the commands below, ensure you have the `ml-dsa` option enabled in wolfSSL. This can be done by configuring wolfSSL with `--enable-wolfclu`,  `--enable-dilithium`, `--enable-dual-alg-certs` and `--enable-experimental`.
 
-The following steps demonstrate how to generate keys and certificates for A, B, and C, where A is self-signed and B and C are signed by A
+The following steps demonstrate how to generate keys and certificates for A, B, and C, where A is self-signed and B and C are signed by A.
 
 1. Create private ECC and ML-DSA keys for A, B, and C
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