Fix minor issues in documentation of mbedtls_ssl_check_record()
@@ -1762,7 +1762,7 @@ void mbedtls_ssl_conf_read_timeout( mbedtls_ssl_config *conf, uint32_t timeout )
* and authentic record (DTLS only).
*
* This function does not change the user-visible state
- * of the SSL context. It's sole purpose is to provide
+ * of the SSL context. Its sole purpose is to provide
* an indication of the legitimacy of an incoming record.
*
* This can be useful e.g. in distributed server environments
