Markdownify & upgrade to Docusaurus v3

[TheRealPear]

I think this will be my largest pull request so far. Despite the numerous changes here, I have not added any new information pertaining to PGM. However, I did change some, such as map variants.

Here's a summary of my changes so far:

• Upgraded to Docusaurus v3, which requires a minimum of NodeJS v18 now. I decided to use NodeJS v20 because it is the current LTS version at the moment. I've also updated the GitHub Actions workflow to use newer versions of the packages used for deploying, but I have not tested it.
  • Because of the upgrade, anything that has a new line will also have <p> wrapped around, causing extra spacing where there should not be any. This was part of why I converted tables to Markdown.
• Almost every tables have been converted to Markdown syntax. Some exceptions are Region Modifier Elements, Event Cause Filters, and Enchantments table because of their use of colSpan, which is not an option in standard Markdown. I also skipped over Material Finder table because I wasn't sure how it would affect the materials search script.
• Rearranged tables CSS so it will work on both HTML and Markdown tables. However, I still have to use table-container div, otherwise the border-radius, box-shadow, and margin settings wouldn't apply.
• Fixed buttons being uncentered in Downloads page, also enabled Community download button with a nightly.link download
• Fixed Edit URL pointing to a invalid GitHub link.
• Rewrote some paragraphs and corrected typo throughout the docs again.
• Fixed React errors appearing in console.

[TheRealPear]

However, I still have to use table-container div, otherwise the border-radius, box-shadow, and margin settings wouldn't apply.

I wanted to make a Docusaurus plugin where it would automatically wrap any Markdown tables with the div, but doing it is currently beyond my knowledge at the moment. I think the current workaround should be fine for now.

I also want to convert commonly used badges into a React component, but same issue as above. I will leave this for someone to do in a future pull request.

[CoWinkKeyDinkInc]

Thanks for simplifying all of these nasty HTML tables. Are you ready to have it merged?

[TheRealPear]

Thanks for your suggestions. It is ready for merging and we can resolve any new issues once I return from my vacation.