kt test param fix

Author: tiftran

components/nimbus/android/src/test/java/org/mozilla/experiments/nimbus/NimbusBuilderTest.kt

@@ -35,8 +35,8 @@ class NimbusBuilderTest {
         }.build(
             appInfo,
             NimbusServerSettings(
-                remoteSettingsService = RemoteSettingsService(storageDir = "dummy", config = RemoteSettingsConfig2()),
-                collection = "nimbus-preview",
+                rsService = RemoteSettingsService(storageDir = "dummy", config = RemoteSettingsConfig2()),
+                collectionName = "nimbus-preview",
             ),
         ) as DummyNimbus
         assertTrue(n1.usePreviewCollection)
@@ -144,7 +144,7 @@ class DummyNimbus(
     var initialExperiments: Int? = null
 
     val usePreviewCollection: Boolean
-        get() = serverSettings?.collection == "nimbus-preview"
+        get() = serverSettings?.collectionName == "nimbus-preview"
 
     override fun applyLocalExperiments(file: Int): Job {
         initialExperiments = file