Documentation Changes 增加 scrollbar 的demo (#3550) (fd47ed39) fix typos in 'docs/manual/concepts' (#3552) (2c74fc52) tooltip: remove useless code (#3549) (f0e4e334) Bug Fixes line: 修复折线图 smooth 绘制错误 (#3546) (daf3b8a8) Code Style Changes geometry: removed double slash in path (#3542) (d8bc1aae)
