Documentation updates (#236)

* Documentation updates

* formatting

* Update using-rocprofv3.rst

* Update counter_collection_services.md

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Co-authored-by: srawat <120587655+SwRaw@users.noreply.github.com>

[ROCm/rocprofiler-sdk commit: 31b8f61c8e]

projects/rocprofiler-sdk/source/docs/_toc.yml.in

@@ -14,6 +14,7 @@ subtrees:
     - file: how-to/using-rocprofv3
     - file: how-to/using-rocprofiler-sdk-roctx
     - file: how-to/samples
+      title: Samples
     - file: how-to/using-pc-sampling
     - file: how-to/using-rocprofv3-with-mpi
   - caption: API reference