Correct command in make package

cmake command in making packages was not updated.

Signed-off-by: Amber Lin <Amber.Lin@amd.com>

Change-Id: Iafd3d9f4941d782bd77cfd0efafe48a02221b002

README.md

@@ -24,7 +24,7 @@ If the hsakmt-roct and hsakmt-roct-dev packages are desired:
 ```bash
     mkdir -p build
     cd build
-    cmake ..
+    cmake -DCMAKE_MODULE_PATH=${PWD}/../cmake_modules ..
     make package
     make package-dev
 ```