Fix a thumbnail path
[books.alexwlchan.net] / src /
drwxr-xr-x   ..
drwxr-xr-x - covers
-rw-r--r-- 461 index.md
drwxr-xr-x - plans
drwxr-xr-x - reviews
-rw-r--r-- 35007 tint_colors.json
drwxr-xr-x - will_never_read