跳转链接待修正

[channely]

打开编辑器后

• 其中“文档”的跳转，需将 https://oasisengine.cn/#/docs/latest/cn/editor 改为 https://oasisengine.cn/#/docs/latest/cn/editor
• 其中“讨论”的跳转，需将 https://github.com/ant-galaxy/galacean/engine/discussions/categories/editor 改为 https://github.com/galacean/engine/discussions/new?category=editor

[eyworldwide]

github 已经支持组织级别的 discussions，所以不太适合放到 engine 仓库的 discussion 下，讨论地址改成：https://github.com/orgs/galacean/discussions/new?category=editor

issue: https://github.com/galacean/editor/issues/1523