Update web page to mention polars

[gjbex]

Summary by Sourcery

Documentation:

• Update documentation to include 'polars' as an alternative to 'pandas' in the web page content.

[sourcery-ai]

Reviewer's Guide by Sourcery

This PR updates the course schedule documentation to include Polars as an alternative to Pandas when working with Seaborn for data visualization.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Updated course curriculum to include Polars as an alternative to Pandas	Modified the course schedule to show 'pandas & seaborn or polars & seaborn' instead of just 'pandas & seaborn' Maintained the same time allocation of 105 minutes for the data manipulation and visualization section	docs/README.md

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[sourcery-ai]

Hey @gjbex - I've reviewed your changes - here's some feedback:

Overall Comments:

• Consider adding a brief note explaining why both pandas and polars are listed as options (e.g., if instructors can choose based on their preference, or if there's a specific reason to cover both).

Here's what I looked at during the review

• 🟡 General issues: 1 issue found
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[sourcery-ai]

suggestion: Consider clarifying whether the choice between pandas and polars is made by the instructor or participants

This will help participants better prepare for the session and understand what they need to know beforehand.

Suggested change

	| pandas & seaborn or polars & seaborn |105 min. |
	| data analysis with seaborn (using pandas or polars, instructor's choice) |105 min. |