[NFC] Correct comments and line spacing

- Correct spelling mistakes or working in comments.
- Adding missing line separators.
- Add missing comments for namespace closing brace.

Change-Id: If09cdd38aa088b0f68f750dfdef81351eb8c4935

rocclr/device/devprogram.cpp

@@ -522,7 +522,7 @@ bool Program::compileAndLinkExecutable(const amd_comgr_data_set_t inputs,
     }
   }
 
-  //  Create the relocatiable data set
+  //  Create the relocatable data set
   if (status == AMD_COMGR_STATUS_SUCCESS) {
     status = amd::Comgr::create_data_set(&relocatableData);
   }