feat(VerticalFeatures): update feature titles and descriptions

Update the titles and descriptions of the features in the VerticalFeatures component to improve clarity and accuracy. The title "AI 编码助手" has been changed to "智能编码助手", and the description has been slightly modified. The title "智能应用开发框架" has been changed to "LLM 应用开发框架".

Author: phodal