kfdtest: Clean up comments

Consolidate style (use /* */ for multi-line), fix typos,
use dword instad of DWORD/DWord

Change-Id: I620e45c1687550db41127e45641b7d79d28223a1


[ROCm/ROCR-Runtime commit: 414042abf7]

projects/rocr-runtime/tests/kfdtest/src/KFDPNPTest.cpp

@@ -34,7 +34,7 @@ void KFDPNPTest::SetUpTestCase() {
 
     AcquirePrivilege(OS_DRIVER_OPERATIONS);
 
-    // if AcquirePrivilege fails, it will throw and we will not reach here.
+    // If AcquirePrivilege fails, it will throw and we will not reach here.
     m_SetupSuccess = true;
 
     ROUTINE_END