docs: Add "What Did You Get Done This Week? #6" notes

[YoungPhlo]

Relates to:

Documentation standardization effort

Risks

Low - This is a documentation-only change that standardizes formatting across December 2024 stream notes.

Background

What does this PR do?

• Standardizes formatting for December stream documentation
• Updates timestamp formatting to use markdown links
• Improves readability with consistent bullet points and headers
• Adds new stream notes for "What Did You Get Done This Week? 6"

What kind of change is this?

Improvements (standardization of existing documentation)

Documentation changes needed?

These changes are documentation changes themselves, no additional documentation updates required.

Testing

Where should a reviewer start?

Review the following files for consistent formatting:

• docs/community/Streams/12-2024/2024-12-03.md
• docs/community/Streams/12-2024/2024-12-05.md
• docs/community/Streams/12-2024/2024-12-06.md
• docs/community/Streams/12-2024/2024-12-13.md
• docs/community/Streams/12-2024/2024-12-20.md

Detailed testing steps

1. Verify timestamp links are properly formatted and functional
2. Check that bullet points are consistently styled
3. Confirm headers follow standard hierarchy
4. Ensure all stream metadata (date, links) follows the new format
5. Validate that content is preserved while improving readability