changed macosx tutorial to properly handle different mac arch possibi…

[azaidi06]

…lities with single command

Fixes

This fixes issue #1497 : #1497

Summary/Motivation:

New Mac devices now come with apple silicon which requires a different set of binaries relative to previous intel version -- in order to accommodate both types, a single command is used to determine and download what's appropriate.

Changes proposed in this PR:

Simply changing the tutorial for Macs to accommodate the potential differences in CPU arch -- the command will be able to determine which arch is being used on the device and download the appropriate binaries. This will help mitigate potential mistakes of downloading the incorrect type/version for apple silicon vs intel.

Legal Acknowledgement

By contributing to this software project, I agree to the following terms and conditions for my contribution:

1. I agree my contributions are submitted under the license terms described in the LICENSE.txt file at the top level of this directory.
2. I represent I am authorized to make the contributions and grant the license. If my employer has rights to intellectual property that includes these contributions, I represent that I have received permission to make contributions and grant the required license on behalf of that employer.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.05%. Comparing base (d43c5dd) to head (fd2dbcb).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1544      +/-   ##
==========================================
- Coverage   77.06%   77.05%   -0.01%     
==========================================
  Files         389      389              
  Lines       62680    62680              
  Branches    10276    10276              
==========================================
- Hits        48303    48300       -3     
- Misses      11939    11943       +4     
+ Partials     2438     2437       -1     

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[ksbeattie]

The rendering of this:

I think could be improved. Maybe something more like the following section:

using the .. include:: and a .. code-block:: console like the other sections.

[ksbeattie]

@azaidi06 will look at this today.

[ksbeattie]

It's getting better..

but still not quite there.

[azaidi06]

corrected the newlines missing around the directive and now its rendering correctly

[lbianchi-lbl]

Minor changes (should be enough to hit "Commit suggestion")