we now use Zulip rather than Matrix

Author: pdurbin

modules/container-base/README.md

@@ -25,7 +25,7 @@ provides in-depth information about content, building, tuning and so on for this
 **Where to get help and ask questions:**
 
 IQSS will not offer support on how to deploy or run it. Please reach out to the community for help on using it.
-You can join the Community Chat on Matrix at https://chat.dataverse.org and https://groups.google.com/g/dataverse-community
+You can join the Community Chat at https://chat.dataverse.org and https://groups.google.com/g/dataverse-community
 to ask for help and guidance.
 
 ## Supported Image Tags

modules/container-configbaker/README.md

@@ -19,7 +19,7 @@ provides information about this image.
 **Where to get help and ask questions:**
 
 IQSS will not offer support on how to deploy or run it. Please reach out to the community for help on using it.
-You can join the Community Chat on Matrix at https://chat.dataverse.org and https://groups.google.com/g/dataverse-community
+You can join the Community Chat at https://chat.dataverse.org and https://groups.google.com/g/dataverse-community
 to ask for help and guidance.
 
 ## Supported Image Tags

src/main/docker/README.md

@@ -24,7 +24,7 @@ for more details on tunable settings, locations, etc.
 **Where to get help and ask questions:**
 
 IQSS will not offer support on how to deploy or run it. Please reach out to the community for help on using it.
-You can join the Community Chat on Matrix at https://chat.dataverse.org and https://groups.google.com/g/dataverse-community
+You can join the Community Chat at https://chat.dataverse.org and https://groups.google.com/g/dataverse-community
 to ask for help and guidance.
 
 ## Supported Image Tags