[doc] Add phi.math.magic module API
### Module Documentation
| Module API | Documentation |
-|-------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [phi.vis](phi/vis) | [Visualization](Visualization.md): Plotting, interactive user interfaces <br /> [Dash](Web_Interface.md): Web interface <br /> [Console](ConsoleUI.md): Command line interface |
| [phi.physics](phi/physics) <br /> [phi.physics.advect](phi/physics/advect.html) <br /> [phi.physics.fluid](phi/physics/fluid.html) <br /> [phi.physics.diffuse](phi/physics/diffuse.html) <br /> [phi.physics.flip](phi/physics/flip.html) | [Fluids Tutorial](Fluids_Tutorial.html): Introduction to core classes and fluid-related functions. <br /> [Overview](Physics.md): Domains, built-in physics functions <br /> [Functions for Fluid Simulations](Fluid_Simulation.md): Advection, projection, diffusion |
| [phi.field](phi/field) | [Overview](Fields.md): Grids, particles <br /> [Staggered Grids](Staggered_Grids.html): Data layout, usage <br /> [Reading and Writing Simulation Data](Reading_and_Writing_Data.md) <br /> [Scene Format Specification](Scene_Format_Specification.md): Directory layout, file format |
| [phi.geom](phi/geom) | [Overview](Geometry.md): Differentiable Geometry |
-| [phi.math](phi/math) <br /> [phi.math.backend](phi/math/backend) <br /> [phi.math.extrapolation](phi/math/extrapolation.html) | [Overview](Math.html): Named dimensions, backends, indexing, non-uniform tensors, precision <br /> [Optimization and Training](Optimization.md): Automatic differentiation, neural network training <br /> [Performance](GPU_Execution.md): GPU, JIT compilation, profiler |
+| [phi.math](phi/math) <br /> [phi.math.backend](phi/math/backend) <br /> [phi.math.extrapolation](phi/math/extrapolation.html) <br /> [phi.math.magic](phi/math/magic.html) | [Overview](Math.html): Named dimensions, backends, indexing, non-uniform tensors, precision <br /> [Optimization and Training](Optimization.md): Automatic differentiation, neural network training <br /> [Performance](GPU_Execution.md): GPU, JIT compilation, profiler |
### Core Classes
