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/KFDExceptionTest.hpp

@@ -55,7 +55,7 @@ class KFDExceptionTest : public KFDBaseComponentTest {
                              unsigned int dimX = 1, unsigned int dimY = 1,
                              unsigned int dimZ = 1);
 
- protected:  // members
+ protected:  // Members
     pid_t m_ChildPid;
     HSAKMT_STATUS m_ChildStatus;