The "Help Online" button on Pidgin 3 is broken, when you click on it, it sends you to [https://pidgin.imhelp/](https://pidgin.imhelp/) instead of [https://pidgin.im/help](https://pidgin.im/help).
On prior releases (at least on 2.x.y) the `PURPLE_WEBSITE` constant was defined as [https://pidgin.im/](https://pidgin.im/) but in Pidgin 3 it's defined as [https:pidgin.im](https:pidgin.im).
That's why ` purple_notify_uri(NULL, PURPLE_WEBSITE "help"); ` send us to [https://pidgin.imhelp](https://pidgin.imhelp).
Changing `purple_notify_uri(NULL, PURPLE_WEBSITE "help");` to `purple_notify_uri(NULL, PURPLE_WEBSITE "/help");` could help, however I decided to change the value of `-DPURPLE_WEBSITE` to be persistent with prior releases.