docs: add comments

Riot/Modules/ContextMenu/Services/RoomContextActionService.swift

@@ -205,6 +205,7 @@ class RoomContextActionService: NSObject, RoomContextActionServiceProtocol {
     
     private func getLeaveAlertController() -> UIAlertController {
         if LeaveRoomHelper.canLeaveRoom(self.session, self.room) {
+            // BWI: #6526 change leave room info
             var message = ""
             if  LeaveRoomHelper.isOnlyMember(self.room) {
                 message = BWIL10n.roomParticipantsLeaveAndDeletePromptMsg

Riot/Modules/Room/RoomInfo/RoomInfoList/RoomInfoListViewController.swift

@@ -79,6 +79,7 @@ final class RoomInfoListViewController: UIViewController {
     
     private func getLeaveAlertController() -> UIAlertController {
         if  self.viewModel.canLeaveRoom() {
+            // BWI: #6526 change leave room info
             var message = ""
             if viewModel.isOnlyMember() {
                 message = BWIL10n.roomParticipantsLeaveAndDeletePromptMsg

Riot/Modules/Room/RoomInfo/RoomInfoList/RoomInfoListViewModel.swift

@@ -127,6 +127,7 @@ final class RoomInfoListViewModel: NSObject, RoomInfoListViewModelType {
          return LeaveRoomHelper.canLeaveRoom(self.session, self.room)
     }
     
+    // BWI: #6526 change leave room info
     func isOnlyMember() -> Bool {
         return LeaveRoomHelper.isOnlyMember(self.room)
     }

Riot/Modules/Room/RoomInfo/RoomInfoList/RoomInfoListViewModelType.swift

@@ -38,6 +38,7 @@ protocol RoomInfoListViewModelType {
     
     func process(viewAction: RoomInfoListViewAction)
     func canLeaveRoom() -> Bool
+    // BWI: #6526 change leave room info
     func isOnlyMember() -> Bool
     func isDirectRoom() -> Bool
     func isPersonalNotesRoom() -> Bool