Probably there is a logical cause/motivation for that OpenWrt DokuWikiinterwiki link configuration change and I am looking forward for further help in this from somebody.
The wikidevi ID is meant as backup for situations where the original wikidevi.wi-cat.ru link is not available (which was the case at some time during the past 4 weeks). It is based on the assumption, that every descendant of the original wikidevi (wikidevi.wi-cat.ru is one of those) has the same link scheme as the original wikidevi.
In this case, the wikidevi link in the dataentry was working for wikidevi.wi-cat.ru due to a redirect, whereas techinfodepot didn't have this redirect.
I have now corrected the wikidevi link in the dataentry, resulting in working links for both wikidevi.wi-cat.ru and techinfodepot.
I am a frequent contributor to https://wikidevi.wi-cat.ru/ as can be seen by Contributions and most of the other wikis are just taking my entries from there! DeviWiki appears to have not any new entries since 2019.
wikidevi.wi-cat.ru is my reference as well sine wikidevi went defunct. And I can tell you from personal experience the site operator is picky about details (and details matter with embedded).
@tmomas, thanks for the quick response with info and action.
Now I notice during editing an OpenWrt DokuWiki page when pasting the url https://wikidevi.wi-cat.ru/, that url is automatically replaced by [[hwinfo_alternative2>]]. In preview such link is not working. I can solve it by typing the url instead of pasting it.