refactor: organise sections

[odoveestrella]

This pull request updates and expands the Advice_Tips_data_visualization.md documentation to improve clarity, organization, and usefulness for users looking for data visualization guidance. The most important changes include restructuring sections for better readability, expanding the coverage of visualization topics, and enhancing resources for color usage and reusable themes.

Documentation structure and content improvements:

• The introduction to the "Points of view presentation" is now clearer, with an expanded outline of topics covered, such as composition, figure elements, color usage, plot types, and figure clarity.

Color usage and resources:

• The section on color usage has been renamed to "Colour usage" and reorganized for clarity, including a dedicated subsection for perception of color.
• The color resources section has been expanded to include more links to predefined color names, palettes, and tools for generating customized palettes, with clearer grouping and descriptions.

Reusable themes guidance:

• Added and reorganized guidance for creating reusable themes, including a new general section and a focused subsection for R, to help users maintain visual consistency across plots.

Cleanup and redundancy removal:

• Removed redundant and outdated color resources section at the end of the document, consolidating all relevant links and tools into the improved earlier section.

[Copilot]

Pull request overview

This pull request refactors the data visualization advice documentation to improve organization and accessibility. The changes consolidate related content, enhance section structure, and expand resources for color selection and reusable themes.

Changes:

• Restructured the document with clearer section hierarchy and improved headings (e.g., "Points of view presentation" becomes a standalone section, "Plot galleries" gets its own top-level section)
• Expanded and reorganized colour usage guidance with dedicated subsections for perception and resources, including more comprehensive palette tools
• Moved "Creating reusable themes" content earlier in the document and removed redundant "Colour resources for plots" section from the end

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[odoveestrella]

@copilot Address the review comments and the linting issues

[Copilot]

@odoveestrella I've opened a new pull request, #302, to work on those changes. Once the pull request is ready, I'll request review from you.

[CarlosLopezElorduy]

@copilot Address the review comments and the linting issues

[Copilot]

@CarlosLopezElorduy I've opened a new pull request, #313, to work on those changes. Once the pull request is ready, I'll request review from you.

[CarlosLopezElorduy]

Nice!

[efigb]

good job :)