Make the doc pages for the Box and Pattern classes consistent

[yvonnefroehlich]

Description of proposed changes

Make the doc pages for the Box abd Pattern classes consistent, to use "Parameters" as section.

If possible it would be nice to remove the "Attribute" section, as there is not entery; but keep it for the pygm.Figure class.
-> issue #4138

Preview:

• Box
  • OLD: https://www.pygmt.org/dev/api/generated/pygmt.params.Box.html
  • NEW: https://pygmt-dev--4131.org.readthedocs.build/en/4131/api/generated/pygmt.params.Box.html
• Pattern
  • OLD: https://www.pygmt.org/dev/api/generated/pygmt.params.Pattern.html
  • NEW: https://pygmt-dev--4131.org.readthedocs.build/en/4131/api/generated/pygmt.params.Pattern.html
• Figure (should still have the "Attribute" section)
  • OLD: https://www.pygmt.org/dev/api/generated/pygmt.Figure.html
  • NEW:

Reminders

• Run make format and make check to make sure the code follows the style guide.
• Add tests for new features or tests that would have caught the bug that you're fixing.
• Add new public functions/methods/classes to doc/api/index.rst.
• Write detailed docstrings for all functions/methods.
• If wrapping a new module, open a 'Wrap new GMT module' issue and submit reasonably-sized PRs.
• If adding new functionality, add an example to docstrings or tutorials.

Slash Commands

You can write slash commands (/command) in the first line of a comment to perform
specific operations. Supported slash command is:

• /format: automatically format and lint the code

[weiji14]

If possible it would be nice to remove the "Attribute" section, as there is not entery.

The Attributes section was added in #2402, and it seems to count @property methods that start with an underscore. Will need to update the code here:

pygmt/doc/_templates/autosummary/class.rst

Lines 7 to 14 in 35f06da

	{% if attributes %}
	.. rubric:: Attributes
	{% for item in attributes %}
	.. autoproperty::
	{{ objname }}.{{ item }}
	{% endfor %}
	{% endif %}

If you change that L7 from {% if attributes %} to {% if '_aliases' not in attributes %}, the Attributes section should be hidden for these Param classes.