Fix some code quality/formatting

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/room/RoomContentForwarder.kt

@@ -32,7 +32,7 @@ import kotlin.time.Duration.Companion.milliseconds
 
 /**
  * Helper to forward event contents from a room to a set of other rooms.
- * @param slidingSync the [SlidingSync] to fetch room instances to forward the event to
+ * @param roomListService the [RoomListService] to fetch room instances to forward the event to
  */
 class RoomContentForwarder(
     private val roomListService: RoomListService,

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/room/RoomListExtensions.kt

@@ -1,3 +1,19 @@
+/*
+ * Copyright (c) 2023 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package io.element.android.libraries.matrix.impl.room
 
 import io.element.android.libraries.matrix.impl.util.mxCallbackFlow