fix: translate cubie npu use docs

[EESN-W]

修改说明

• 重新翻译 Cubie 系列产品的部分 NPU 开发章节教程
• 翻译 PR docs: split a733 and t527 command in Allwinner NPU docs #1016

[windsurf-bot]

Other comments (5)

• i18n/en/docusaurus-plugin-content-docs/current/common/ai/_cubie_resnet50.mdx (366-366) There's an inconsistency in image paths. Some paths use `/img/` while others use `/en/img/`. For example, line 127 was changed from `/en/img/cubie/a7a/resnet50_input.webp` to `/img/cubie/a7a/resnet50_input.webp`, but the image at line 366 was similarly changed. For consistency, all image paths should follow the same pattern.
• i18n/en/docusaurus-plugin-content-docs/current/common/ai/_cubie_resnet50.mdx (269-269) The heading level for 'Board-side ResNet50 Inference' was changed from ## to ###, which breaks the document structure. This section should remain a level-2 heading (##) since it represents one of the two main steps mentioned in the introduction (PC-side model conversion and board-side inference).
• i18n/en/docusaurus-plugin-content-docs/current/common/ai/_cubie_yolov5.mdx (134-134) The image paths need to include the '/en/' prefix for English documentation. Currently, they're set to '/img/cubie/a7a/yolov5_input.webp' and '/img/cubie/a7a/yolov5_result.webp', but should be '/en/img/cubie/a7a/yolov5_input.webp' and '/en/img/cubie/a7a/yolov5_result.webp' to match the original paths.
• i18n/en/docusaurus-plugin-content-docs/current/common/ai/_cubie_yolov5.mdx (401-401) This image path also needs the '/en/' prefix for English documentation.
• i18n/en/docusaurus-plugin-content-docs/current/common/ai/_cubie_yolact.mdx (163-163) The image path has been changed from '/en/img/cubie/a7a/yolact_result.webp' to '/img/cubie/a7a/yolact_result.webp'. Please verify that this new path is correct for the English documentation. If the '/en/' prefix is required for proper image display in the English version, this change might break the image reference.

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