Refactor documentation and resolve module visibility issues in PyKale

[SinaTabakhi]

Description

The PyKale documentation currently lacks documentation for a few modules, and there are issues where the body of certain modules is not visible (as shown in the provided image). To address these concerns, it is necessary to update the PyKale documentation by adding the missing modules, fixing errors that prevent modules from being displayed, and reordering the modules to ensure an alphabetically-sorted arrangement. This update will improve the PyKale documentation.

Status

Ready

Types of changes

• Non-breaking change (fix or new feature that would not break existing functionality).
• Breaking change (fix or new feature that would cause existing functionality to change).
• New tests added to cover the changes.
• In-line docstrings updated.
• Source for documentation at docs manually updated for new API.

[codecov-commenter]

Codecov Report

Merging #386 (40edb43) into main (607c3cc) will not change coverage.
The diff coverage is n/a.

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@@           Coverage Diff           @@
##             main     #386   +/-   ##
=======================================
  Coverage   91.51%   91.51%           
=======================================
  Files          49       49           
  Lines        5234     5234           
=======================================
  Hits         4790     4790           
  Misses        444      444           

[haipinglu]

Excellent 💪. Thank you.