message: add pylint install note
diff: @@ -51,6 +51,9 @@ Generate documentation {#tutorial_documentation_generate}
  @code{.sh}
  make check_pylint
  @endcode
  +@note [Pylint](https://www.pylint.org/#install) must be installed before running cmake to be
  +able to test Python code. You can install using your system's package manager, or with pip:
  +@code{.sh} pip install pylint @endcode
  Quick start {#tutorial_documentation_quick_start}
  ===========
  