Fix typo

Author: fzaninotto

docs/Features.md

@@ -721,7 +721,7 @@ React-admin takes advantage of the Single-Page-Application architecture, impleme
 - **Local Database Mirror**: React-admin populates its internal cache with individual records fetched using `dataProvider.getList()`. When a user views a specific record, React-admin leverages its internal database to pre-fill the `dataProvider.getOne()` query response. As a result, record details are displayed instantaneously, without any wait time for server responses.
 - **Optimistic Updates**: When a user edits a record and hits the "Save" button, React-admin immediately updates its local database and displays the revised data, prior to sending the update query to the server. The resulting UI changes are instant - no server response wait time required. The same logic applies to record deletions.
 - **Query Deduplication**: React-admin identifies instances where multiple components on a page call the same data provider query for identical data. In such cases, it ensures only a single call to the data provider is made.
-- **Query Aggregation**: React-admin intercepts all calls to `dataProvider.getOne()` for related data when a `<ReferenceField>` is used in a list. It aggregates and deduplicates the requested ids, and issues a solitary dataProvider.getMany() request. This technique effectively addresses the n+1 query problem, reduces server queries, and accelerates list view rendering.
+- **Query Aggregation**: React-admin intercepts all calls to `dataProvider.getOne()` for related data when a `<ReferenceField>` is used in a list. It aggregates and deduplicates the requested ids, and issues a single `dataProvider.getMany()` request. This technique effectively addresses the n+1 query problem, reduces server queries, and accelerates list view rendering.
 - **Opt-In Query Cache**: React-admin provides an option to prevent refetching an API endpoint for a specified duration, which can be used when you're confident that the API response will remain consistent over time.
 
 ## Undo