Documentation Enhancements

[jescalada]

Hi, I'd like to make a few minor changes to the documentation files to make them more readable.

Changes:

• Added headers to separate content into bite-sized pieces
  • Makes the documentation easier to browse
  • Improves SEO by adding context to each document
• Standardized whitespaces and punctuation
  • Slightly improves readability (especially for anybody editing docs)
• Reordered Writing.md schema creation section to have high-level API shown first, and added an internal link to an example of the graph API
  • This improves developer experience by emphasizing the easier way of doing things while also giving an example for the lower-level API
• Fixed various typos and improved wording
  • Fixed minor typo in code snippet
  • Fixed references to LogicalColumnWriter and LogicalColumnReader to aid SEO

Feel free to recommend any changes you see fit, particularly regarding the header names if you feel they aren't relevant enough.

Thank you!

[adamreeve]

These changes all look great thanks @jescalada

[jescalada]

Thank you! 😄