updated types names and solvers docstrings

[lucaferranti]

fixes #45

[codecov-commenter]

Codecov Report

Merging #48 (4523bf0) into main (e0a4d2c) will not change coverage.
The diff coverage is 92.00%.

@@           Coverage Diff           @@
##             main      #48   +/-   ##
=======================================
  Coverage   96.03%   96.03%           
=======================================
  Files           8        8           
  Lines         227      227           
=======================================
  Hits          218      218           
  Misses          9        9           

Impacted Files	Coverage Δ
src/IntervalLinearAlgebra.jl	100.00% <ø> (ø)
src/solvers/hull.jl	86.36% <83.33%> (ø)
src/solvers/oettli.jl	100.00% <100.00%> (ø)
src/solvers/precondition.jl	100.00% <100.00%> (ø)
src/solvers/solve.jl	100.00% <100.00%> (ø)
src/rref.jl	100.00% <0.00%> (ø)
src/utils.jl	100.00% <0.00%> (ø)
src/classify.jl	100.00% <0.00%> (ø)

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