Cleaning up material modification table

[john-science]

What is the change?

I improved the "materials modification" table in the blueprints docs:

• I removed duplicate entries.
• I added any modifications from the superclasses.

The contents of the table are now:

('B4C', 'B10_wt_frac, theoretical_density, TD_frac')
('FuelMaterial', 'class1_custom_isotopics, class2_custom_isotopics, class1_wt_frac, customIsotopics')
('Lithium', 'LI_wt_frac, LI6_wt_frac')
('Sulfur', 'sulfur_density_frac, TD_frac')
('ThU', 'U233_wt_frac, class1_custom_isotopics, class2_custom_isotopics, class1_wt_frac, customIsotopics')
('Thorium', 'class1_custom_isotopics, class2_custom_isotopics, class1_wt_frac, customIsotopics, class1_custom_isotopics, class2_custom_isotopics, class1_wt_frac, customIsotopics')
('ThoriumOxide', 'TD_frac, class1_custom_isotopics, class1_wt_frac, class2_custom_isotopics, customIsotopics')
('UThZr', 'U235_wt_frac, ZR_wt_frac, class1_custom_isotopics, class2_custom_isotopics, class1_wt_frac, customIsotopics')
('UZr', 'U235_wt_frac, ZR_wt_frac, class1_custom_isotopics, class2_custom_isotopics, class1_wt_frac, customIsotopics')
('Uranium', 'U235_wt_frac, TD_frac, class1_custom_isotopics, class2_custom_isotopics, class1_wt_frac, customIsotopics')
('UraniumOxide', 'TD_frac, U235_wt_frac, class1_custom_isotopics, class1_wt_frac, class2_custom_isotopics, customIsotopics')

Why is the change being made?

To close #1437

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Checklist

• This PR has only one purpose or idea.
• Tests have been added/updated to verify that the new/changed code works.

• The code style follows good practices.
• The commit message(s) follow good practices.

• The release notes (location doc/release/0.X.rst) are up-to-date with any important changes.
• The documentation is still up-to-date in the doc folder.
• The dependencies are still up-to-date in pyproject.toml.