Update README.md

Fix the broken documentation link.

Signed-off-by: Zhang Lili <[email protected]>

Author: lzha101

README.md

@@ -409,7 +409,7 @@ To enable ECDSA attestation
   * 8th Generation Intel(R) Core(TM) Processor or newer with **Flexible Launch Control** support*
   * Intel(R) Atom(TM) Processor with **Flexible Launch Control** support*
 - To use ECDSA attestation, you must install Intel(R) Software Guard Extensions Driver for Data Center Attestation Primitives (Intel(R) SGX DCAP).
-Please follow the [Intel(R) SGX DCAP Installation Guide for Linux* OS](https://download.01.org/intel-sgx/latest/dcap-latest/linux/docs/Intel_SGX_DCAP_Linux_SW_Installation_Guide.pdf) to install the Intel(R) SGX DCAP driver.
+Please follow the [Intel(R) SGX DCAP Installation Guide for Linux* OS](https://download.01.org/intel-sgx/latest/dcap-latest/linux/docs/Intel_SGX_SW_Installation_Guide_for_Linux.pdf) to install the Intel(R) SGX DCAP driver.
 
 **NOTE**: If you had already installed Intel(R) SGX driver without ECDSA attestation, please uninstall the driver firstly and then install the Intel(R) SGX DCAP driver. Otherwise the newly installed Intel(R) SGX DCAP driver will be unworkable.