chore: 修复图表示例基础图表打不开的问题

[interstellarmt]

Checklist

• documents are updated

Description of change

• 修复图表示例基础图表打不开的问题

[gemini-code-assist]

Summary of Changes

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此拉取请求旨在解决图表示例中基础图表无法打开的问题。通过对示例文件 column-data-format.ts 进行路径重构，并引入相应的 meta.json 元数据文件以及中英文索引文件，确保了示例能够正确加载和显示。这些改动优化了示例的组织结构，并提升了文档站点的可用性。

Highlights

• 修复图表示例问题: 解决了基础图表示例无法正常打开的问题，提升了用户体验。
• 文件路径重构: 将 column-data-format.ts 示例文件移动到更合适的 analysis/process/demo 目录下。
• 新增元数据和索引: 为重构后的示例路径添加了 meta.json 文件，并为“数据处理”类别新增了中英文索引文件。

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[gemini-code-assist]

Code Review

此拉取请求通过重命名示例文件并添加必要的元数据和文档文件，成功修复了图表示例无法打开的问题。这些更改有助于将示例正确集成到网站结构中，提高了可访问性。

[gemini-code-assist]

当前 meta.json 文件中的 title 字段（“中文分类” / “Category”）对于此演示组来说过于通用。考虑到 process 部分的标题是“数据处理”，建议将此处的标题更改为更具描述性的内容，例如“数据格式示例”或“列数据格式示例”，以提高清晰度。

Suggested change

	"title": {
	"zh": "中文分类",
	"en": "Category"
	},
	"title": {
	"zh": "数据格式示例",
	"en": "Data Format Examples"
	},

[Copilot]

Pull request overview

This PR adds the missing documentation/index entry and a demo definition under site/examples/analysis/process, intended to fix the “基础图表打不开” issue by making the “数据处理 / Data Process” example section discoverable and renderable in the docs site.

Changes:

• Add index.zh.md / index.en.md front-matter for the new analysis/process examples section.
• Add demo/meta.json to register demos for the section.
• Add a new demo (column-data-format.ts) showcasing column-major data input.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 1 comment.

File	Description
site/examples/analysis/process/index.zh.md	Adds the Chinese doc section front-matter for the examples index.
site/examples/analysis/process/index.en.md	Adds the English doc section front-matter for the examples index.
site/examples/analysis/process/demo/meta.json	Registers the demo(s) for the new examples section.
site/examples/analysis/process/demo/column-data-format.ts	Adds a new demo that uses column-major data with G2.

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[Copilot]

Line 5 contains trailing whitespace (spaces on an otherwise empty line). Please remove it to keep Markdown front-matter files consistent with the rest of the examples and avoid whitespace-only diffs.

Suggested change

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