[Bug] Some svg image on the document page cannot be displayed

Some svg image on the document page cannot be displayed.

Page url: https://docs.gitlab.cn/jh/user/project/merge_requests/methods/index.html#%E5%90%88%E5%B9%B6%E6%8F%90%E4%BA%A4

Screenshots

JiHu	Upstream
https://docs.gitlab.cn/jh/user/project/merge_requests/methods/index.html	https://docs.gitlab.com/ee/user/project/merge_requests/methods/index.html