[docs] [issue31570] minor bug in documentataion relating to sending html email

[Henk-Jaap Wagenaar]

Henk-Jaap Wagenaar added the comment:

I have made a PR, not sure whether it needs backporting?

----------
nosy: +Henk-Jaap Wagenaar

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue31570>
_______________________________________