[tex4ht] removing indentation after block quote

[Michal Hoftich]

Dear Alexandre,

> I have another question, this time about how to make tex4ht *not* indent the text that comes after a block quote without a double-newline. I think it may be a bug report (which would make it more appropriate for this listserv), but in case it is considered a customization, I have posted it on tex.sx: https://tex.stackexchange.com/q/628280/44742

I've fixed that in TeX4ht sources. Thanks for the report.

Best regards,
Michal