[rocprofv3-avail] Documentation update and column formatting (#447)

* addressing issues

* doc fix

* test fix

* fix

* fix formatting issue and doc update

* fix column size

* fix

* fix formatting in output

* tests fix

* test fix

* add new line

* add new line

* fix new line

* fixing typo in using-rocprofv3-avail.rst

tests/rocprofv3-avail/validate.py

@@ -110,8 +110,9 @@ def test_counter_set(capsys, rocm_path):
 
 def set_library(rocm_path):
     ROCPROF_LIST_AVAIL_TOOL_LIBRARY = (
-        f"{rocm_path}/libexec/rocprofiler-sdk/librocprofv3-list-avail.so"
+        f"{rocm_path}/lib/rocprofiler-sdk/librocprofv3-list-avail.so"
     )
+    os.environ["ROCPROFILER_METRICS_PATH"] = f"{rocm_path}/share/rocprofiler-sdk"
     avail.loadLibrary.libname = os.environ.get(
         "ROCPROF_LIST_AVAIL_TOOL_LIBRARY", ROCPROF_LIST_AVAIL_TOOL_LIBRARY
     )