this and should be an or

doc/Developers-Intro.md

@@ -126,7 +126,7 @@ If you want to get involved here:
 * Look at the first steps that were made (e.g. the clean theme).
 Ask us to find out whom to talk to about their experiences.
 * Talk to design people if you know any.
-* Let us know about your plans [in the dev forum](https://forum.friendi.ca/profile/developers) and the [theme developer forum](https://friendica.eu/profile/ftdevs).
+* Let us know about your plans [in the dev forum](https://forum.friendi.ca/profile/developers) or the [theme developer forum](https://friendica.eu/profile/ftdevs).
 Do not worry about cross-posting.
 
 ###Client software