【图片显示问题】添加网络图片后会自动在后面出现图片号

在添加网络图片后，Next主题中出现的图片末尾会自动显示图片号，如图所示：
网络图片的链接如下：
找了很多资料都没有结果，诚恳请问怎么解决？

Start by reproducing the reported network-image rendering in the NexT theme documentation and compare the displayed result with the screenshots in the issue. Trace where the image markup or styling is defined; done means network images render without an unwanted image number appended.

Written by the indexing model from the issue text.