develop/github-actions: gitter -> zulip

Author: ctrueden

_pages/develop/github-actions.md

@@ -22,14 +22,14 @@ Deploying your library to a [Maven](/develop/maven) repository makes it availabl
 ## Requirements
 
 -   Host your [open-source](/licensing/open-source) project on [GitHub](/develop/github).
--   Contact an ImageJ admin in [Gitter](/discuss/chat#gitter) or [the Image.sc Forum](http://forum.image.sc/) and request that they add the authentication secrets for deployment to your organization.
+-   Contact an ImageJ admin on the [Image.sc Zulip](https://imagesc.zulipchat.com/) or the [Image.sc Forum](http://forum.image.sc/) and request that they add the authentication secrets for deployment to your organization.
 
 ## Instructions
 
 -   In order to add Github CI support to a repository, the secrets are needed: A) for deploying to Maven repositories; and B) in the case of deploying to OSS Sonatype, for GPG signing of artifacts. 
 -   If the secrets have been added to your organization, and you have push access to the relevant repository on GitHub, you can use the [github-actionify.sh script](https://github.com/scijava/scijava-scripts/blob/-/github-actionify.sh) with the `-f` flag to perform the needed operations. 
 -   The github-actionify script will return '[ERROR] Dirty working copy' if you have uncommited changes. If you get this error, check the status of the repository with `git status` and then run `github-actionify -f` again.
--   If you need help, please ask [on the Image.sc Forum](https://forum.image.sc/) in the Development category, or in the [scijava-common channel](https://gitter.im/scijava/scijava-common) on Gitter.
+-   If you need help, please ask [on the Image.sc Forum](https://forum.image.sc/) in the Development category, or in the [SciJava stream](https://imagesc.zulipchat.com/#narrow/channel/327237-SciJava) on the Image.sc Zulip.
 
 ## Configuration of JavaFX builds