fix error message

Signed-off-by: Marcel Hibbe <dev@mhibbe.de>

app/src/main/java/com/nextcloud/talk/chat/viewmodels/ChatViewModel.kt

@@ -100,7 +100,7 @@ class ChatViewModel @Inject constructor(private val repository: ChatRepository)
         }
 
         override fun onError(e: Throwable) {
-            Log.e(TAG, "Error when fetching room")
+            Log.e(TAG, "Error when joining room")
             _joinRoomViewState.value = JoinRoomErrorState
         }