Fix typos

Co-authored-by: Daniel (dB.) Doubrovkine <[email protected]>

README.md

@@ -89,7 +89,7 @@ end
 Loop over the first records again.
 
 ```ruby
-Feed::Item.desc(:position).limit(5).scroll(saved_previous_cursor) do |record, iterator|
+Feed::Item.desc(:position).limit(5).scroll(saved_iterator.previous_cursor) do |record, iterator|
   # each record, one-by-one
   saved_iterator = iterator
 end
@@ -119,7 +119,7 @@ end
 Resume iterating using the previously saved cursor.
 
 ```ruby
-session[:feed_items].find.sort(position: -1).limit(5).scroll(iterator.next_cursor, { field_type: DateTime }) do |record, iterator|
+session[:feed_items].find.sort(position: -1).limit(5).scroll(saved_iterator.next_cursor, { field_type: DateTime }) do |record, iterator|
   # each record, one-by-one
   saved_iterator = iterator
 end

UPGRADING.md

@@ -2,7 +2,7 @@
 
 ## Upgrading to >= 2.0.0
 
-The second argument passed to the block in `Mongoid::Criteria::Scrollable#scroll` and `Mongo::Scrollable#scroll` has changed. It is now an instance of `Mongoid::Criteria::Scrollable` that provides two methods: `next_cursor` and `previous_cursor`. The `next_cursor` method returns the same cursor as in versions prior to 2.0.0.
+The second argument yielded in the block in `Mongoid::Criteria::Scrollable#scroll` and `Mongo::Scrollable#scroll` has changed from a cursor to an instance of `Mongoid::Criteria::Scrollable` which provides `next_cursor` and `previous_cursor`. The `next_cursor` method returns the same cursor as in versions prior to 2.0.0.
 
 For example, this code: