Delete redundant content of 'docs/extend/plugins.md' Upstream-commit: 80ec9fa284c22bc0df617c3d55c49cbbddfb8bb8 Component: engine
Delete redundant content of 'docs/extend/plugins.md' Upstream-commit: 80ec9fa284c22bc0df617c3d55c49cbbddfb8bb8 Component: engine