Add param default and type to math docs

[brynpickering]

Fixes #677

Summary of changes in this pull request

• Piped parameter "default" through to math docs
• Added parameter "type" to math docs

Reviewer checklist

• Test(s) added to cover contribution
• Documentation updated
• Changelog updated
• Coverage maintained or improved

[irm-codebase]

Looking good. I've added a small question about the values we fetch from the schema.
Once that's answered I'll approve.

Checked:

• Documentation changes.
• Added type checks to the math documentation.

[irm-codebase]

given the discussion, I am approving this PR

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.98%. Comparing base (e447d17) to head (91c229b).
Report is 19 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #690   +/-   ##
=======================================
  Coverage   95.98%   95.98%           
=======================================
  Files          26       26           
  Lines        3981     3985    +4     
  Branches      837      769   -68     
=======================================
+ Hits         3821     3825    +4     
  Misses         70       70           
  Partials       90       90           

Files with missing lines	Coverage Δ
src/calliope/backend/backend_model.py	97.97% <100.00%> (+<0.01%)	⬆️
src/calliope/backend/latex_backend_model.py	96.91% <100.00%> (+0.05%)	⬆️