Fix broken image links in documentation

[wenebob]

Description

Some images in the documentation are not rendering correctly because the referenced image files/URLs do not exist.

Details

• The image links point to resources that appear to be missing or removed
• This results in broken images when viewing the documentation

Page: https://malariagen.github.io/malariagen-data-python/latest/

Broken Links:

• Anopheles Funestus: https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Anopheles_Funetus.jpg/640px-Anopheles_Funetus.jpg

• Anopheles Minimus: https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Anopheles_minimus_1.jpg/640px-Anopheles_minimus_1.jpg

Suggested Fix

• Remove the broken image references, or
• Replace them with valid image links if available

I'd like to work on this issue