Look at https://species.wikimedia.org/api/rest_v1/page/html/Terminalia_chebula
We have:
<title><i>Terminalia chebula</i></title>
It should be:
<title>Terminalia chebula</title>
Reported first in MWoffliner repository https://github.com/openzim/mwoffliner/issues/1797