Add links to source code for documentation

Author: cyrozap

getinvolved.md

@@ -4,6 +4,8 @@ layout: default
 
 # Get Involved
 
+## Developer Chat
+
 Want to contribute to the project? We suggest joining the developer chat, which may be accessed via your choice of IRC or Discord:
 
 * IRC: \#scopehal on [irc.libera.chat](ircs://irc.libera.chat:6697/scopehal)
@@ -15,3 +17,15 @@ Public logs of the bridged channels can be found [here](https://libera.irclog.wh
 The developer chat is the primary mechanism for active developers to discuss features they're working on, help each other out, and coordinate the overall direction of the project.
 
 We also host developer meetings on Zoom, typically about once per month. Connection and scheduling information is shared in the chat channel.
+
+## Source Code
+
+All source code for applications and documentation can be found in the [ngscopeclient organization on GitHub](https://github.com/ngscopeclient).
+
+Source code for documentation is located in the following repositories:
+
+* This website: [ngscopeclient/ngscopeclient.github.io](https://github.com/ngscopeclient/ngscopeclient.github.io)
+* End-user documentation: [ngscopeclient/scopehal-docs](https://github.com/ngscopeclient/scopehal-docs)
+* Developer API documentation is derived from Doxygen comments in the following repositories:
+  * [ngscopeclient/scopehal-apps](https://github.com/ngscopeclient/scopehal-apps)
+  * [ngscopeclient/scopehal](https://github.com/ngscopeclient/scopehal)