docs(algorithms/structures)📝: improve and reformat markdown cells for clarity and consistency

- Reformat all markdown cells to remove excessive indentation and ensure consistent formatting.
- Update markdown headings and blockquotes for better readability.
- Add a new discussion question at the end regarding the innovation graph in 2025.
- Update some code cells to include plt.show() for plotting functions.
- Change nv.circos(G) to nv.arc(G) for graph visualization.
- Update dependency comments to include pyprojroot and tqdm.
- Bump marimo version in metadata from 0.13.0 to 0.14.9.

Author: ericmjl