Fix link to IJ plugin sources in doc (#6575)

Author: BoD

docs/source/testing/android-studio-plugin.mdx

@@ -136,4 +136,4 @@ Unless you opt out, the plugin reports properties and events related to:
 - usage of the IDE plugin (e.g. which features are enabled in the settings)
 
 The exact list of properties and events can be found in
-the [source code](https://github.com/apollographql/apollo-kotlin/blob/main/intellij-plugin/src/main/kotlin/com/apollographql/ijplugin/telemetry/TelemetrySession.kt).
+the [source code](https://github.com/apollographql/apollo-intellij-plugin/blob/main/plugin/src/main/kotlin/com/apollographql/ijplugin/telemetry/TelemetrySession.kt).