Images in directories should not be listed on the Home (TOC) pages

[kevin-lee]

The images in the directories are listed on the corresponding Home (TOC) pages.
So if I have directories and files like

repo-home/
         ➥Dir1/
              ➥Some.md
              ➥Some-Image.png

Then Dir1.md has a link to Some-Image.png.
I don't think any images should be listed on the home (TOC) page.