Fix SCons option documentation

[ischoegl]

Changes proposed in this pull request

Ensure that all SCons options are listed (instead of documenting the configuration of the build system)

If applicable, fill in the issue number this pull request is fixing

Closes #1767

If applicable, provide an example illustrating new features this pull request is introducing

Checklist

• The pull request includes a clear description of this code change
• Commit messages have short titles and reference relevant issues
• Build passes (scons build & scons test) and unit tests address code coverage
• Style & formatting of contributed code follows contributing guidelines
• The pull request is ready for review

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.24%. Comparing base (ec0cfdb) to head (8efe1dd).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1790   +/-   ##
=======================================
  Coverage   73.23%   73.24%           
=======================================
  Files         381      381           
  Lines       54375    54375           
  Branches     9251     9251           
=======================================
+ Hits        39823    39826    +3     
+ Misses      11580    11578    -2     
+ Partials     2972     2971    -1     

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[bryanwweber]

LGTM thanks!