[docs] Update docs

[m-bert]

Description

In this PR, I go through each section and make sure that everything is in the same style, has correct information and there are no broken links.

Test plan

Read docs 🤓

[Copilot]

Pull request overview

This pull request updates and standardizes the documentation across the react-native-gesture-handler project. The changes focus on improving consistency, correcting links, fixing formatting issues, and reorganizing content for better readability. The documentation structure has been updated to reflect the new monorepo layout where docs are now located in packages/docs-gesture-handler/.

Changes:

• Updated repository paths and edit URLs to reflect new packages/docs-gesture-handler/ structure
• Improved documentation consistency by adding internal links, reorganizing sections, and wrapping code examples with CollapsibleCode components
• Enhanced cross-referencing between related documentation pages with hyperlinks
• Added support for Groovy syntax highlighting for Android code blocks
• Standardized formatting and improved readability across troubleshooting, testing, installation, and gesture composition guides

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
packages/docs-gesture-handler/docusaurus.config.js	Updated editUrl path to new monorepo structure and added groovy language support
packages/docs-gesture-handler/docs/guides/troubleshooting.mdx	Reorganized content, added Tabs for package managers, improved formatting and wording
packages/docs-gesture-handler/docs/guides/testing.md	Restructured API documentation, improved descriptions, added links to examples
packages/docs-gesture-handler/docs/guides/quickstart/index.md	Added target="_blank" to external Reanimated documentation link
packages/docs-gesture-handler/docs/fundamentals/state-manager.mdx	Added hyperlink to gesture lifecycle documentation
packages/docs-gesture-handler/docs/fundamentals/reanimated-interactions.mdx	Added links and removed backticks from plain text "Reanimated" mentions
packages/docs-gesture-handler/docs/fundamentals/introduction.md	Added links to specific gesture types and updated documentation repository path
packages/docs-gesture-handler/docs/fundamentals/installation.mdx	Reorganized sections, added macOS instructions, improved clarity of setup steps
packages/docs-gesture-handler/docs/fundamentals/gesture-detector.mdx	Fixed touchAction type definition, improved SVG example, updated Reanimated link
packages/docs-gesture-handler/docs/fundamentals/gesture-composition.mdx	Wrapped examples with CollapsibleCode, imported simultaneous example from external file
packages/docs-gesture-handler/docs/fundamentals/callbacks-events.mdx	Removed backticks from "Reanimated" in plain text
packages/docs-gesture-handler/docs/fundamentals/animated-interactions.mdx	Added links to callback documentation and useNativeDriver reference
packages/docs-gesture-handler/docs/fundamentals/_examples/simultaneous.tsx	New example file for simultaneous gestures demonstration

Comments suppressed due to low confidence (4)

packages/docs-gesture-handler/docs/guides/troubleshooting.mdx:14

• Incorrect capitalization: "Github" should be "GitHub" (capital H and capital B) to match the correct brand name.
  packages/docs-gesture-handler/docs/guides/troubleshooting.mdx:25
• Incorrect capitalization: "Github" should be "GitHub" (capital H and capital B) to match the correct brand name.
  packages/docs-gesture-handler/docs/fundamentals/gesture-composition.mdx:9
• The import path contains a double slash and escaped underscores. Based on other raw-loader imports in the codebase (e.g., in use-pan-gesture.mdx, use-tap-gesture.mdx), the path should use a single slash and unescaped underscores. The correct path should be './_examples/simultaneous'.
  packages/docs-gesture-handler/docs/guides/troubleshooting.mdx:65
• The bash code block has inconsistent indentation. It has 6 spaces of indentation while other code blocks in the same TabItem have 4 spaces. This should be consistent with the surrounding code blocks for proper formatting.

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